What to look for in nature in Michigan this May
May is when Michigan turns on. The DNR calls it the peak of migration for birds that wintered well to the south, and the first two weeks of the month bring the heaviest waves of warblers through the shoreline parks and the woods behind them. On the young jack pine plains of northern Michigan, Kirtland's warblers, whose nesting range is among the most restricted of any bird in the continental United States, return from the Bahamas. Piping plovers sit on roped-off beaches, snapping turtles leave the water to lay eggs, gray treefrogs start trilling, and the first trillium opens under the hardwoods. Morels fruit from late April into June, and Holland holds its tulip festival from April 30 to May 9. It is also the month when fawns are born and left alone for hours at a time, and the advice is simple: leave them be. A freeze can still reach the north in May, and Lake Michigan and Lake Superior stay cold enough to be dangerous. The full Flower Moon on May 20 is a seasonal Blue Moon, and the Eta Aquariid meteors peak under a nearly new Moon in the first week.
Other months in Michigan: October, November, December, January, February, March, April.
Start here
- Spend a dawn in a shoreline woodlot. Pick a state park or metropark with brushy edges and a mix of tall trees, go in the first half of May, and look low and mid-level in the half-leafed shrubs for small, fast, bright birds. Listen first, then look.
- Look at the ground at the edge of a quiet road. Turtles cross roads to lay eggs in May, and snakes lie on warm pavement. Slow down, and if it is safe, carry a turtle over the way it was facing.
- Walk a hardwood woods for trillium after a warm spell. Beech and maple woods in the south bloom first. Stay on the trail, leave the flowers, and write the date you first see white petals in your field log.
Keep a record: May is the heart of birds I have seen, so log each warbler by date and place, and use a map of sounds for the gray treefrog trill and the first loon call. Nest observed fits a robin, a mourning dove or a killdeer you can watch from a distance; a tree through the seasons plate suits a single maple as its leaves unfold. Dawn at a woodland edge is the time for the dusk and dawn watch during the migrant rush, and any feather found on a beach or trail earns a page of its own. Note the day you spot trillium in the daily field log.
Regions used below: Western Upper Peninsula; Eastern Upper Peninsula; Northern Lower Peninsula; West Michigan and the Lake Michigan shore; The Thumb and Saginaw Bay; Southeast Michigan and Metro Detroit; Southwest Michigan.
When does spring bird migration peak in Michigan, and where can you see warblers?
Mostly the first half of May. The Michigan DNR says May brings the peak of migration for birds that wintered well south of the state, with warblers, shorebirds and the return of the puddle ducks. An interpretive supervisor for the Huron-Clinton Metroparks wrote in May 2026 that the full flood of migrants arrives within the first fortnight, timed with hatching insects and breaking buds. The weather moves each wave by days, so read these as typical windows, not promises.
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Warblers in the half-leafed woods
Typically the first half of May, with stragglers later · Shoreline parks, metroparks and woodlots across the Lower Peninsula
Warblers are tiny insect-eaters, and in early May the trees are not yet in full leaf, so the birds are easier to find in the shrub layer and deeper woods. The Metroparks article names Lake St. Clair, Oakwoods and Kensington as good places because they have several habitats side by side. The DNR lists shoreline stopovers where migrants collect after crossing a lake: Tawas Point, Port Crescent, Belle Isle, Sterling, Sleeper, Bay City, Leelanau, Fisherman's Island, Fort Wilkins and McLain state parks. Look for a bird that never sits still and listen for thin, high songs. The Cornell Lab's BirdCast migration forecast maps predict the nighttime flights a few hours after sunset, which helps you pick a morning.
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Hawks and waterbirds at the Straits of Mackinac
The hawk count typically runs March 5 to June 5; the waterbird count typically runs March 20 to May 15 · Mackinaw City, Mackinac Island and St. Ignace
The Mackinac Straits Raptor Watch counts raptors crossing the Straits every day in spring. In late April and May the counters work from 9 a.m. to 6 p.m., and the group notes that from mid-April through May some raptors ride thermals too high to see without binoculars. The waterbird count alternates days from two beaches, McGulpin Point near Mackinaw City and Graham Point at St. Ignace. The DNR also lists Lakeport State Park, Brockway Mountain and Whitefish Point among the spring hawk-watch sites.
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Shorebirds and ducks on wet ground
Through May · Managed wetlands, river floodplains and wet fields
The DNR points out that muddy wetlands, flooded river bottoms and farm fields left soggy after rain are where migrating sandpipers stop for a quick meal. It also reminds readers that Michigan has about 5.5 million acres of wetlands, and that the southern Lower Peninsula's Wetland Wonders are managed for nesting and migrating waterfowl. The Detroit River International Wildlife Refuge counts 31 species of shorebirds among the 300 bird species recorded in its habitats.
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World Migratory Bird Day
A mid-May Saturday; the 2027 date was not yet posted · Anywhere there are birds
The official World Migratory Bird Day site describes a mid-May Saturday for Canada and the United States and, as of October 2026, had published no 2027 date or theme. Local programs vary and organizers have not announced 2027 events, so check with a nearby park, nature center or Audubon chapter.
Use the cloud guide to read the weather fronts that bring and hold migrants: a warm south wind can move birds in overnight, and a cold front or rain can ground them in the morning.
Where can you see a Kirtland's warbler in Michigan?
Almost no one sees one without a guide. The U.S. Fish and Wildlife Service says Kirtland's warblers are rarely seen in Michigan outside their nesting habitat, and that the nesting areas are closed and posted against entry during the nesting season, which makes a guided tour the best opportunity to view one. Plan for the second half of May and after: the Audubon field guide says the birds arrive on their breeding grounds mostly in mid-May, with males a few days ahead of females.
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A bird that nests in one kind of forest
Arrives mostly in mid-May; leaves in August and September · Young jack pine plains of northern Michigan, plus parts of Wisconsin and Ontario
The Forest Service describes the Kirtland's warbler as a habitat specialist that nests only in large areas of dense young jack pine, trees generally between 5 and 15 feet tall. The female builds her nest on the ground, often under the branches of young pine or oak, and lays four to five eggs. An archived 2019 Fish and Wildlife Service page says the stands must be at least 80 acres, with 300 to 400 acres or more preferred. The male is bluish gray above and yellow below, with black streaks on the sides. The birds spend the winter in the Bahamas.
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Fire, and the forest that replaces it
Managed year-round · Huron-Manistee National Forests and DNR lands near Grayling, Mio and the AuSable River
Jack pine regenerates after fire, and for thousands of years wildfires made the young stands this warbler needs. Modern fire control protects homes and towns but lets the pines grow too tall for the bird, so land managers cut old jack pine and replant young trees. The Forest Service, the DNR and the Fish and Wildlife Service together manage about 3,400 acres a year for the warbler. The Fish and Wildlife Service removed the species from the endangered list on November 8, 2019, with an estimated 2,300 or more pairs, up from lows of the 1970s and 1980s that the Audubon field guide puts near 200 singing males.
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How to go
Tours usually start in May; check the organizers for 2027 dates · Forest Service and Michigan Audubon guided tours; the self-guided Jack Pine Wildlife Viewing Tour
An archived 2019 Fish and Wildlife Service page says guided tours were offered by the Forest Service and by Michigan Audubon, and we could not confirm any 2027 tours or dates, so ask them directly. The Forest Service also publishes the Jack Pine Wildlife Viewing Tour, a self-guided 58-mile drive through jack pine country marked by signs that carry a picture of the warbler. The DNR's AuSable Birding Trail, which covers the Houghton Lake, Higgins Lake, St. Helen, Grayling and AuSable River area, lists Kirtland's warblers and bald eagles among its birds.
Do not enter a closed nesting area, even for a photo. The birds nest on the ground, and disturbance can cost them a season. Log a sighting as a lifetime entry under birds I have seen in the Naturalist's Field Journal.
Which birds, turtles and snakes are nesting or on the move in Michigan in May?
Nearly everything with a clutch of eggs. Three stories repeat across the state: shorebirds on closed beaches, loons and swans in the wetlands, and reptiles crossing pavement.
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Piping plovers on the Lake Michigan beaches
Present from early April through mid-August; nesting is under way in May · Sleeping Bear Dunes National Lakeshore and other northern beaches
The National Park Service says Great Lakes piping plovers return in April and early May and stay to nest, and that the greatest concentration of the endangered shorebirds in the Great Lakes is at Sleeping Bear Dunes. Staff and volunteers rope off nesting areas, and the nesting area on North Manitou Island is closed to the public from mid-April to August 15. The park's page puts the Great Lakes population at between 75 and 80 nesting pairs, so check the park for the current count. The chicks are camouflaged and easy to step on. Watch from outside the fence, keep dogs on a leash and do not feed gulls.
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Loons, swans and cranes at Seney
Late May is a good time for warblers and rails there · Seney National Wildlife Refuge, Schoolcraft County
The Fish and Wildlife Service says common loons and trumpeter swans return to the refuge pools in spring to raise young, sandhill cranes may be seen in their mating dance, and bald eagles are commonly seen along the Marshland Wildlife Drive and the Pine Ridge Nature Trail. The refuge also highlights late May for spotting warblers and hearing rails. According to a Fish and Wildlife Service photo caption on Wikimedia Commons, a pair of loons has raised young at Seney since 1997 and includes the oldest and most productive documented common loons in the world.
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Robins, doves and killdeer in your own yard
Nesting season · Porches, shrubs, gravel lots and athletic fields
The Metroparks article describes the common neighborhood nests: the robin's stick-and-mud cup and turquoise eggs, the mourning dove's flimsy platform of twigs, and the killdeer's bare scrape in gravel. A killdeer will fake a broken wing to lure you away. The advice is the same for all of them: give them space and quiet, because a bird flushed from its nest can lose eggs or young to cold, rain or predators. The DNR adds that federal law covers birds, nests and eggs, so all of them stay untouched.
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Turtles and snakes on the move
May · Wetland edges, trails and roadsides
The Metroparks article says egg-laying season for turtles such as the common snapping turtle is also the peak season for turtles being hit by cars. Michigan has ten species of turtles and 18 species of snakes, and both groups bask and travel in May as the air warms. Snakes often lie on paved trails because pavement holds heat. When traffic allows, carry a turtle across the way it was facing, and let a nesting female finish. Turtles return to the same areas year after year, so carrying one somewhere else can do harm.
The April page covers the plovers' arrival. In May the work is staying out of their way.
Which frogs and toads are calling in Michigan in May?
The peepers and wood frogs have mostly finished, and a second wave takes over. The Friends of the Rouge species guide, written for southeast Michigan, says midland chorus frogs are the earliest callers, often heard in March, while other species start later.
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Eastern gray treefrogs
The trill begins around May and runs to about the first of June, per Friends of the Rouge · Trees and shrubs near ponds and wet woods
The call of the eastern gray treefrog is a musical trill. The National Park Service notes that gray treefrogs are about 2 inches long, climb well, can change their color to match their background, and sometimes end up on walls and windows. If a trill comes from a tree on a warm night, this is the likely singer.
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Green frogs
Calling from May through July and sometimes into August · Pond edges, ditches and slow streams
Friends of the Rouge describes the green frog's call as a plucked banjo string and says its breeding window is the longest of any frog in the state. It is one of Michigan's largest frogs, growing to about 6 inches.
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Bullfrogs and leopard frogs
Bullfrogs start calling in June; leopard frogs call in spring · Larger ponds and marshes
The state's largest frog, the bullfrog, makes a rum-rum-rum sound starting in June. Northern leopard frogs sound like a snore or a balloon being rubbed, and the guide says their numbers have been declining since the 1970s, so a good chorus is worth noting.
Michigan also runs an annual Frog and Toad Survey in which volunteers follow a set route of ten roadside stops, pause five minutes at each and rate the calling from 0 to 3; a 2012 DNR bulletin put the typical year at about 200 routes. The DNR also explains how to make your yard friendly to frogs and toads: keep some leaf litter, plant native ground cover, add a shallow pond and use fewer pesticides.
What blooms in Michigan in May, and when are the trilliums, tulips and morels at their best?
It depends on where you stand and what the spring did. Bloom comes to the southern Lower Peninsula first and works north and uphill. Rather than promise dates, use the tool that works best: go on a warm, humid day and look for what is already open.
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Trillium and the spring ephemerals
Typically May in the north; earlier in the south · Beech and maple woodlands
The National Park Service says many wildflowers in Sleeping Bear's hardwood forests bloom in early spring before the trees leaf out, among them trillium, Dutchman's breeches, hepatica, spring beauties and trout lily. A National Park Service photo of white trillium at Pictured Rocks National Lakeshore in the Upper Peninsula is dated May 22, 2016, a reminder that north-country trillium can still be in bloom in the second half of May.
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Tulip Time in Holland
April 30 through May 9, 2027, per the festival · Holland, Ottawa County
The festival's own website lists the 98th Tulip Time as April 30 through May 9, 2027, and says tickets will go on sale soon. The tulips themselves follow the weather, not the calendar, so a cold or warm spring can move peak color by days.
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Morels
Late April to mid-June, depending on location and species · Hardwood forests and burned jack, white or red pine stands
The DNR says May is morel month in Michigan, but the actual fruiting period runs from late April until mid-June. Some of the best picking is in southern Michigan, not only the north. Warm, wet conditions favor the crop and cold, dry weather can mean almost none. Large burn sites where pines once grew can be productive, and the DNR publishes a map of recent large burns (it cannot guarantee morels at any of them). Morels picked on public land are for personal use and cannot be sold. Know a true morel from a poisonous false morel, and make your first hunts with someone who knows mushrooms. Never rake the forest floor or drive off-road to look. Cut stems with a knife and carry mushrooms in a mesh bag.
Do not pick wildflowers on public land or in preserves. Trillium can take years to bloom again if its leaves are removed. The frost page shows why a late freeze can still nip early bloomers in the north.
What should you do if you find a baby animal in Michigan in May?
Almost always: leave it alone and walk away. The DNR says each spring and summer it is flooded with calls from people who have found a baby animal and want to help, and the best help is to leave the animal where it is.
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White-tailed deer fawns
Typically born in May and June · Fields, woodland edges and even lawns
The DNR says a fawn can be left alone for up to eight hours at a time while its mother feeds, that its spots and almost no scent keep it hidden, and that touching it can leave a scent that attracts predators. If you find one, give it plenty of space and leave quickly; the mother may not return if people or dogs are nearby.
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Rabbits, raccoons and fledglings
Spring and summer · Yards, gardens and trails
A mother cottontail will rarely abandon her young and leaves the nest unattended so as not to draw predators. Raccoons usually have their young in April and May. Fledgling birds that leave the nest early are still fed by their parents on the ground; touching one will not make the adults abandon it, but moving it may keep them from finding it. Keep cats and dogs away.
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Ducklings and goslings
Hatching through May and June · Ponds, yards and parks
A mallard sits on her nest for about a month and leaves with the ducklings the same day they hatch, according to the DNR. Canada geese lead their young to water soon after hatching and may hiss and rush at people who come close, so avoid the area if you can.
If a parent is dead or an animal is clearly injured, call a licensed wildlife rehabilitator before moving it; the DNR keeps a directory. It is illegal to keep a live wild animal in Michigan without a license.
How warm, wet and stormy is May in Michigan?
Spring finally settles in. NOAA's 1991 to 2020 averages put May highs near 62 °F at Marquette and about 70 °F at Detroit, and lows from the upper 30s in the north to about 50 °F in the southeast. Precipitation runs around 2.6 to 4 inches. Snow has nearly vanished from the averages: 1.4 inches at Marquette, 0.4 at Sault Ste. Marie, 0.2 at Alpena and none farther south. Any single May can be far from average.
| Station | Average high | Average low | Precipitation | Snowfall |
|---|---|---|---|---|
| Marquette (NWS office, Negaunee Township) | 61.7 °F | 39.6 °F | 3.37 in | 1.4 in |
| Sault Ste. Marie | 63.2 °F | 41.0 °F | 2.64 in | 0.4 in |
| Alpena | 65.8 °F | 40.9 °F | 2.78 in | 0.2 in |
| Traverse City | 67.2 °F | 43.4 °F | 2.84 in | not published |
| Grand Rapids | 69.8 °F | 48.6 °F | 4.00 in | 0.0 in |
| Saginaw (MBS Airport) | 68.6 °F | 47.7 °F | 3.41 in | 0.0 in |
| Flint | 68.9 °F | 46.0 °F | 3.68 in | 0.0 in |
| Lansing | 69.4 °F | 47.5 °F | 3.66 in | 0.0 in |
| Detroit (Metro Airport) | 70.3 °F | 50.2 °F | 3.72 in | 0.0 in |
Late freezes are still possible. The National Weather Service office in Gaylord summarized May 2026 as a cool month in the north. Pellston dropped to 19 °F on May 2, Gaylord to 23 °F on May 2, Traverse City to 25 °F on May 2 and Alpena to 25 °F on May 12, and several stations averaged 2 to nearly 4 degrees below normal. The same office's May 2025 summary shows lows of 26 to 31 °F in the northern Lower Peninsula between May 1 and 9. These are examples of what the month has done, not a forecast.
Storms. The same May 2026 summary shows a dramatic shelf cloud over Gaylord on May 18, and notes that the storm produced a brief tornadic waterspout on Big Bradford Lake near Waters. Thunderstorms become more common as the air warms, so check the radar before a day on a lake or a beach.
Wildfire season. A 2015 DNR bulletin noted that spring, meaning April through June, is when most of the state's wildfires start, and that about one in three comes from yard-debris burning done carelessly or without a permit. Dead grass and needles from last year dry out fast on a sunny, windy afternoon.
The current 90-day outlook lives at the Climate Prediction Center; read it there, since we do not restate it. For reading a single day's sky, see our weather pages.
How much daylight does Michigan gain in May?
Close to an hour, and slightly more in the north. Between May 1 and May 31 the days lengthen by 59 minutes at Detroit and 70 at Ironwood, roughly 2 minutes a day, and every city on the list passes 15 hours of daylight before the month ends. Clocks are already on daylight time, so the gain shows up as later evenings and earlier dawns.
| City | May 1 | May 31 | Gained | Per day |
|---|---|---|---|---|
| Ironwood | 14 h 23 m | 15 h 33 m | 70 min | 2.3 min |
| Marquette | 14 h 24 m | 15 h 33 m | 69 min | 2.3 min |
| Sault Ste. Marie | 14 h 24 m | 15 h 33 m | 69 min | 2.3 min |
| Traverse City | 14 h 14 m | 15 h 19 m | 65 min | 2.2 min |
| Alpena | 14 h 16 m | 15 h 22 m | 66 min | 2.2 min |
| Grand Rapids | 14 h 06 m | 15 h 07 m | 61 min | 2.0 min |
| Lansing | 14 h 06 m | 15 h 06 m | 60 min | 2.0 min |
| Detroit | 14 h 04 m | 15 h 03 m | 59 min | 2.0 min |
The gain slows toward the end of the month, ahead of the solstice. For your own sunrise and sunset times, use the daylight calendar; April's gain and the Pink Moon are on the April page.
What can you see in Michigan's night sky in May 2027?
Times below are Eastern daylight time. In the Upper Peninsula's Central-time corner, take an hour off every time below. The headlines are the Eta Aquariid meteors in the first week, then the full Flower Moon, a seasonal Blue Moon, on May 20.
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Eta Aquariid meteors under a new Moon
Active April 19 to May 28; best mornings May 5, 6 and 7 before dawn · Look toward the east and southeast in the last hours before dawn
Two sources, two peaks: the American Meteor Society says the night of May 5 into 6, Sea and Sky the night of May 6 into 7. Any of the three mornings is worth a try. The Moon is new at 6:58 a.m. EDT on the 6th, only about 2 percent lit on the peak night, and Sea and Sky rates it an excellent year. Rates are best far to the south. From the equator northward the society expects only moderate counts, 10 to 30 meteors per hour, and Michigan sits well north, where the radiant in Aquarius clears the horizon late and fewer will show. Let your eyes adapt for 20 minutes. The meteors are bits of Halley's comet.
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The Flower Moon, a seasonal Blue Moon
Full at 6:59 a.m. EDT on Thursday, May 20; look the evening of Wednesday, May 19 · Rising in the southeast around sunset
Because the Moon turns full after sunrise on the 20th, the best round Moon of the month climbs the eastern sky on the evening of the 19th; the 18th and 20th are nearly as good. Sea and Sky traces the name Flower Moon to early Native American tribes and the blooms of spring, and lists Corn Planting Moon and Milk Moon as other names. Four full moons fall between this spring's equinox and solstice, and the older seasonal rule hangs the Blue Moon label on the third. The newer meaning, a second full moon within one calendar month, has no example in 2027.
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Mercury in the evening
Greatest eastern elongation on Friday, May 28; best from mid-May to about June 5 · Low in the west-northwest, 45 to 90 minutes after sunset
Mercury's widest eastern separation from the Sun this spring comes on May 28, 22.8 degrees by our calculation, and Sea and Sky's elongation date matches. Northern observers get the strongest evening appearance of the year. The planet is brightest in mid-May and fades through June. Find a flat, open western horizon and bring binoculars.
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Jupiter, Mars and the Moon
Evenings of May 12 and 13, with the Moon near first quarter · High in the evening sky
Jupiter and Mars both linger after dark this month. On May 12 the half-lit Moon passes within roughly a degree and a quarter of Jupiter, and a day later it is some three degrees from Mars, by our calculations. Venus is the brilliant morning object low in the east, rising roughly 60 minutes before sunrise, and from May 6 to 8 it stays within a degree of Saturn, a pair that needs a flat horizon and binoculars.
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The Milky Way core returns
Moonless windows: roughly the first two weeks of May and the last week · Low in the south, in the dark hours before dawn
The galaxy's brightest hub sits low in the south as seen from Michigan. Our calculation for 40° N finds the core is high enough in a dark, moonless sky for at least an hour from May 1 to 14 and again from May 25 to 31. Michigan lies mostly north of that latitude, so expect shorter windows, especially in the Upper Peninsula, where the nights are brief. Get away from town lights.
| Phase | Date | Time |
|---|---|---|
| New moon | Thursday, May 6 | 6:58 a.m. EDT |
| First quarter | Thursday, May 13 | 12:44 a.m. EDT |
| Full moon, the Flower Moon (seasonal Blue Moon) | Thursday, May 20 | 6:59 a.m. EDT |
| Last quarter | Friday, May 28 | 9:58 a.m. EDT |
| New moon | Friday, Jun 4 | 3:40 p.m. EDT |
For the phase on any other date, see the moon calendar. Clock times on this page are daylight time.
When is the last spring freeze in Michigan?
Often not until the middle of May in the north, and in the Upper Peninsula and the northeastern Lower Peninsula it can reach into June. The rows below give NOAA's normal for each main station.
| Station | One year in ten | Median | Nine years in ten |
|---|---|---|---|
| Marquette | Apr 26 | May 8 | May 23 |
| Sault Ste Marie | May 5 | May 22 | Jun 4 |
| Alpena Co Rgnl Ap | May 1 | May 17 | May 31 |
| Traverse City Cherry Cptl Ap | Apr 26 | May 12 | May 27 |
| Grand Rapids | Apr 14 | Apr 29 | May 15 |
| Lansing Capital City Ap | Apr 18 | May 1 | May 18 |
| Flint Bishop Intl Ap | Apr 21 | May 6 | May 23 |
| Detroit City Ap | Apr 7 | Apr 21 | May 6 |
Marquette's median last freeze is May 8, Traverse City's is May 12, and Sault Ste. Marie's is May 22. By NOAA's numbers a freeze in the Soo is still possible after June 4 about one year in ten. Each row is one station, and low spots or places inland from the lakes can run colder. The Michigan frost dates page has figures for your own town; keep tomatoes and other tender plants inside until the nine-in-ten date is behind you.
What can Michigan families do outdoors in May?
Walk slowly, listen, and write things down. Most of the best spring activities need no ticket and no gear.
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Look for nests, and watch from a distance
All month · Your yard, a park or a school ground
Cornell's NestWatch is a citizen-science project where anyone can follow a nest and record what they see. Watching from a distance, and not touching the nest, keeps the birds safe.
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Report what you hear and see
Through the spring · Online and in apps
Journey North collects reports of migrants and spring signs, the DNR encourages observations through iNaturalist, and the Cornell Lab's BirdCast maps help you pick a morning for migrants. If you like to drive and listen, ask the DNR about the Frog and Toad Survey.
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Help the bats
Spring and summer · Barns, houses, tree cavities
The Michigan Bat Roost Monitoring Program, run by the Michigan Natural Features Inventory and the DNR, asks residents to report places where bats roost on private or public land. White-nose syndrome was confirmed in Michigan in 2014, and the DNR says knowing when and where bats use roosts is essential for conservation.
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Birding programs and festivals
Annual; check each organizer for 2027 · Metroparks, state parks and Audubon chapters
In 2026 the Huron-Clinton Metroparks offered warbler walks at Oakwoods, beginner birding at Kensington and Indian Springs, and Saturday birding at Lake St. Clair Metropark. Similar programs are usual in May, but 2027 schedules are not posted, so check the park or chapter. World Migratory Bird Day is observed in May, but no 2027 date was posted in October 2026.
Bring a notebook. The Naturalist's Field Journal has plates for nests, birds and the sounds you hear, and the nature index links to every state and month.
Safety notes for May in Michigan
- Spring turkey hunting. In the DNR's guide, the 2026 season ran April 18 through May 31 in the DNR's guide, with some hunts split into April 18 to May 1 and May 2 to 31, and statewide guaranteed licenses for May 2 to 31. Dates and quotas for 2027 are not posted, so check the DNR's spring turkey page. The guide exempts spring turkey hunters from the hunter orange rule, but anyone else walking public woods in the season may want a bright hat.
- Fishing openers. The 2026 fishing guide, valid through March 31, 2027, gives May 15 as the opening day for walleye and northern pike in the Upper Peninsula, and the Saturday before Memorial Day as the start of the bass possession season on most waters (catch-and-release bass fishing is allowed year-round). The 2027 guide is not out, so confirm both dates there before you plan a trip.
- Cold water. The weather service warns that cold shock is just as severe in water of 50 to 60 °F as at 35 °F, and that sudden gasping can be triggered by water up to 77 °F. May air can feel warm while Lake Michigan, Lake Superior and Lake Huron are still cold. Wear a life jacket on a boat or kayak.
- Ticks. According to the state health department, adult blacklegged ticks are active in spring and fall and the nymphs through the summer, and every stage can bite. Light clothing makes ticks easier to spot; look yourself over after brushy walks and pull off any you find.
- False morels. The DNR warns that false morels, such as beefsteak mushrooms, are poisonous. Know the difference, cook all wild mushrooms thoroughly and start with someone experienced.
- Turtles, snakes and nesting birds. Slow down on roads near water, leave snakes alone, stay out of roped plover areas and keep dogs on a leash.
- Moose and young animals. Moose live mainly in the western Upper Peninsula and can weigh up to 1,000 pounds. Stay well back from any moose, and from a cow with a calf. Do not approach fawns or other young animals.
- Wildfire. Get a burn permit if one is required, and do not burn debris when it is dry or windy.
- Storms. Thunderstorms build quickly on warm afternoons: leave the water and the open beach at the first thunder, and if a tornado warning is issued, go to shelter right away.
Sources (45)
- Michigan DNR: spring birding
- Michigan DNR: birding and Michigan birding trails
- Huron-Clinton Metroparks: 12 months of the Metroparks, May (May 6, 2026)
- Mackinac Straits Raptor Watch: what to expect (spring and fall count periods and hours)
- Mackinac Straits Raptor Watch: count sites (waterbird count dates and sites)
- U.S. Fish and Wildlife Service: Detroit River International Wildlife Refuge
- Cornell Lab BirdCast: migration forecast maps
- World Migratory Bird Day: official site
- U.S. Forest Service, Huron-Manistee National Forests: Kirtland's warbler habitat
- U.S. Forest Service, Huron-Manistee National Forests: tours (Kirtland's warbler and Jack Pine Wildlife Tours)
- U.S. Fish and Wildlife Service: Kirtland's warbler (archived 2019 Midwest page)
- Audubon field guide: Kirtland's warbler
- National Park Service: piping plovers at Sleeping Bear Dunes
- National Park Service: wildflowers at Sleeping Bear Dunes
- National Park Service: amphibians at Sleeping Bear Dunes
- Wikimedia Commons: white trillium at Pictured Rocks National Lakeshore (National Park Service photo, May 22, 2016)
- U.S. Fish and Wildlife Service: Seney National Wildlife Refuge, species
- Wikimedia Commons: loon pair at Seney (U.S. Fish and Wildlife Service photo caption)
- Friends of the Rouge: frog and toad species descriptions and calls
- Michigan DNR: volunteers set to begin annual frog and toad survey (2012 bulletin)
- Michigan DNR: attracting frogs and toads
- Michigan DNR: morel mushroom hunting
- Michigan DNR: morel hunting tips
- Michigan DNR: collecting, preparing and cooking morels
- Tulip Time Festival, Holland: official site (2027 festival dates)
- Michigan DNR: keep wildlife wild (baby animals)
- Michigan DNR: bats and the Bat Roost Monitoring Program
- Michigan DNR: moose
- NOAA NCEI: U.S. climate normals 1991-2020, monthly (data service, nine Michigan stations)
- National Weather Service Gaylord: May 2026 climate summary (PDF)
- National Weather Service Gaylord: May 2025 climate summary (PDF)
- Michigan DNR: fire season builds during Wildfire Prevention Week (2015 bulletin)
- NOAA Climate Prediction Center: 90-day seasonal outlook
- U.S. Naval Observatory: moon phases, 2027 (data API)
- Sea and Sky: astronomy calendar of celestial events, 2027
- American Meteor Society: meteor shower calendar, 2027
- Michigan DNR: spring turkey hunting guide (2026 season dates, hunter orange)
- Michigan DNR: 2026 Michigan Fishing Regulations, in force April 1, 2026 to March 31, 2027 (PDF)
- National Weather Service: cold water hazards and safety
- Michigan Department of Health and Human Services: ticks and your health (PDF)
- Cornell Lab: NestWatch
- Journey North: tracking migrations and seasons
- Michigan DNR: iNaturalist
- Photos via Wikimedia Commons; licenses and photographers are credited under each picture
- U.S. Fish and Wildlife Service: Kirtland's Warbler Wildlife Management Area (delisting 2019, 2,300 pairs)
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