What to look for in nature in New Mexico this May

Which birds arrive or nest in New Mexico in May?

• Hummingbirds take over the refuge

  Summer season at Bosque del Apache begins in mid-May · Bosque del Apache National Wildlife Refuge, near Socorro

  The refuge treats mid-May through mid-September as its summer season, naming black-chinned, calliope, broad-tailed and rufous hummingbirds as the colorful regulars of that season. It also points out that many young birds are on the move by then, and that quail run in long single files with a dozen chicks or more behind them. The refuge suggests mornings and evenings for watching, since most animals rest in shade at midday. At the same time, the spring list that ends in mid-May still includes migrating flycatchers, vireos and roughly twelve warbler species, so a trip early in May can catch both crowds.

• Broad-tailed hummingbirds already on territory

  Males back by the second week of April in one recent year · Randall Davey Audubon Center, Santa Fe

  Staff at the Audubon center in the Santa Fe foothills wrote in 2025 that male broad-tailed hummingbirds had returned in the second week of April to claim their territories and that black-chinned hummingbirds were there too. They expected rufous hummingbirds only in late July or early August and called the calliope, the smallest breeding bird in North America, a possible arrival near the end of summer. So in May a hummingbird at a Santa Fe feeder is most likely a broad-tailed or a black-chinned, and a rufous would be a surprise.

• Southwestern willow flycatcher on the move

  Arrives late April to early May; nesting starts late May or early June · Dense willow and cottonwood thickets along streams

  The Fish and Wildlife Service says this endangered songbird reaches its breeding grounds from late April to early May and that pairs start nesting around the last days of May or the first days of June. It is a small bird, just under six inches with its tail, olive-brown above and pale yellow below, with two light wing bars and no pale ring around the eye. The agency says its voice is the best clue: a sharp whit or a sneezy fitz-bew. Nest abandonment is a real risk when people crowd a nesting thicket, so listen from a distance and never play recordings to draw one out.

• Plovers, terns and the tail of the songbird run

  Neotropical songbirds migrate through roughly March to May; shorebirds all summer · Bitter Lake National Wildlife Refuge, near Roswell

  Bitter Lake describes a March-to-May window for neotropical songbirds and says snowy plovers, least terns, other shorebirds and wading birds can be seen all summer, with the exposed salt flats serving as nesting and feeding ground for plovers, avocets and least terns. Stay on the marked routes: a plover nest is a scrape in open ground and easy to step on.

• A free bird walk every weekend

  Saturdays and Sundays at 8:30 a.m., all year · Rio Grande Nature Center State Park, Albuquerque

  The park’s volunteer naturalists lead walks from the Candelaria wetland blind with no sign-up, and binoculars can be borrowed. More than 300 species have been recorded in the park, and the visitor center keeps a whiteboard of recent sightings. A whiteboard check before the walk tells you which migrants stayed.

When do New Mexico’s rivers peak in May?

• The middle Rio Grande at its fullest

  Median peaks May 23 to 25 at Albuquerque, Otowi Bridge and San Marcial · Rio Grande valley

  The river through Albuquerque has a median peak of 3,260 cubic feet per second on May 23, Otowi Bridge 3,510 on May 24 and San Marcial 1,890 on May 25. High water spreads into the bosque, and cold, fast channels are risky for children and dogs even where the surface looks calm.

• Where a river is the star

  Spring spawning season for a rare minnow lasts one to two months · Rio Grande from Cochiti Dam to Elephant Butte Reservoir

  Per the Fish and Wildlife Service, the Rio Grande silvery minnow now occupies about 7 percent of its historic range, only the Rio Grande between Cochiti Dam and the upper end of Elephant Butte Reservoir. Its eggs are semi-buoyant and drift just below the surface, hatching within one to two days. The agency does not name a month for spawning, so treat the high-water weeks as a general guide, not a date. You are unlikely to see the fish, but the shallow backwaters it favors are worth knowing when you walk the river edge.

• Gauges to watch

  Mid to late May in the north · Jemez, Chama, Pecos and Taos area rivers

  The Jemez River’s median peak comes earliest, on May 8, followed by the Rio Chama on May 15, the Rio Pueblo de Taos on May 23 and the Pecos near Pecos on May 25. The upper Rio Grande at Embudo peaks last, on May 30. If you plan to fish or float, check a live gauge the same day.

Can you float the Rio Grande Gorge in May?

• The Ute Mountain section stays closed through May

  April and May · Ute Mountain section, Rio Grande Wild and Scenic River

  The agency closes this section to all boating in April and May to protect nesting raptors, and says the section reopens in June. From June through March it asks boaters to reserve a launch date in advance, with one launch a day. The closure is for the birds on the cliffs, so give the canyon rim a wide berth as well.

• Racecourse and Taos Box

  Runoff season, with flows that change daily · Lower Gorge along NM 68

  The Racecourse is a five-mile whitewater run in the Lower Gorge, easier than the Taos Box, a 15-mile Class III to V stretch that takes six to eight hours and calls for expert skills and prior knowledge of the river. The agency calls the Taos Box the best whitewater in New Mexico. Flows are unpredictable, so it tells boaters to check U.S. Geological Survey data or phone the Taos Field Office before heading out.

• Life jackets are the law

  Every trip · All public waters in the state

  The state’s BOAT Act requires every boater on public water to wear a Coast Guard-approved life jacket. Cold snowmelt can cause shock within minutes of falling in, which is a stronger reason than any rule.

What starts at Carlsbad Caverns on Memorial Day weekend?

• The nightly bat flight

  Every evening from Memorial Day weekend (May 29 to 31, 2027) through October · Bat Flight Amphitheater, Carlsbad Cavern natural entrance

  The program is free and needs no reservation. The park says the start time shifts through the summer as sunset moves, so ask at the visitor center or check the park’s status page for the exact hour. Phones, cameras, laptops and music players are banned in the amphitheater and the area around it, to protect the bats. Lightning can cancel an evening. The park’s outflight page adds that bats with pups may come back to feed at any time, that returning bats are usually busiest near dawn, and that the colony leaves in a spiral around the entrance for as long as three hours.

• Heat and wind

  May through summer · Chihuahuan Desert, southeastern New Mexico

  The park describes windy, mild weather in March through May and summer temperatures from about 90 °F to the low 100s, with rain mostly in late summer and early fall. Bring water for the desert trails, hike early and wear a hat.

• Birds that nest in the cacti and canyons

  Year-round residents and spring nesters · Carlsbad Caverns National Park

  The park’s bird list has 357 species. The cactus wren, a year-round resident, builds its nest in cacti, and the rock wren, the black-throated sparrow and the ladder-backed woodpecker also stay. Three state-threatened birds, Bell’s vireo, the gray vireo and the varied bunting, find some of their best New Mexico breeding habitat here.

What blooms and what blows at White Sands in May?

• Mid-May additions

  Mid-May · Dunes and interdunal flats

  Gypsum centaury, white evening primrose and greenthread join the early bloomers around the middle of May, the park says. The gypsum centaury is described as blooming from April to October, and the Colorado four o’clock from April to mid-September. Purple sand verbena blooms from late April into May. Other plants may flower into summer, especially after the monsoon rains.

• Wind until the monsoon

  Sudden windstorms are frequent from February through May · Dunes Drive and trails

  The park reports spring gusts up to 50 mph, with blowing sand that can make visibility poor and breathing difficult. It says wind can knock over trail posts, and advises turning back if you cannot see the next one.

• Heat arrives early

  May · Dunes with no shade

  The park lists an average May high of 88 °F and a low of 50 °F, with about half an inch of rain, and a May record high of 104 °F. It advises avoiding hiking and strenuous activity once the temperature passes 85 °F, and packing one gallon of water for each person daily, since water is available only at the visitor center. Venomous snakes and scorpions can hide in the sand, so wear closed shoes. The rainy season begins in early July.

When is the last freeze in May, and what flowers follow?

• Two flowering seasons

  Spring, then again after the monsoon rains · Southern and eastern New Mexico

  A New Mexico State University garden column explains that wildflower bloom depends heavily on moisture, with one season after good winter and spring precipitation and another in mid to late summer after the monsoon. Desert chicory flowers for only a few weeks. By May the spring show in the lowlands is mostly done, and the next one waits for July rains.

• Find out what you are looking at

  Chapter meetings and field trips run through the year · Albuquerque, Santa Fe, Taos, Las Cruces, Silver City, Alamogordo

  The state’s Native Plant Society has chapters from Taos and Santa Fe south through Albuquerque, Las Cruces, Silver City and Alamogordo, and links a wildflower guide. Field trips and workdays go on a statewide calendar, the best place to look for May outings.

• Planting by the table

  Late spring · Gardens statewide

  In northern towns, wait until after the nine-years-in-ten date before planting anything tender. In the south and in Albuquerque the date has passed, and the heat now becomes the main concern.

What happens with baby animals in May, and what should you do?

• Fawns, calves and cubs

  Spring and early summer · Forests, meadows and roadsides

  The Department of Wildlife says young deer, elk and bears are often hidden while their mother feeds, usually a few hundred yards off. Do not touch or move a baby animal, because returning it later seldom works, and walk away quietly. If you think one is truly abandoned, mark the spot and call the local conservation officer.

• Black bear sows with cubs

  Emerge around May · Mountain forests

  A department bear-safety release says that males and independent young bears come out first, while sows with cubs emerge around May. Never come between a mother and her cubs. Take down bird feeders, pick up fallen fruit, store garbage and pet food, and give any bear room to leave. Aggressive bears can be reported at 888-248-6866 (the department’s information line).

• Young birds on the ground

  From mid-May · Bosque del Apache and any wooded park

  The refuge notes many young birds on the move in summer. A fledgling hopping on the ground with feathers and a parent calling nearby usually needs nothing from you.

How dry, windy and fire-prone is May in New Mexico?

• A soaking Memorial Day weekend in 2026

  May 24 to 26, 2026 · Statewide

  The office named a Memorial Day weekend soaker its weather event of the month: a Pacific low pulled deep subtropical moisture across the state, almost every location got at least a tenth of an inch, and the Albuquerque Sunport received more rain in 24 hours than a typical whole May. The office said the rain eased fire danger for a short time, with no severe storm or flash flood reports apart from a couple of stray gusts. One year does not set a pattern; most Mays are drier than this.

• Fire already burning

  Mid-May · Central and northern mountains

  The same report was illustrated with a photo of the Seven Cabins Wildfire on May 17, 2026, a reminder that fire season is under way before the summer storms. The State Forestry Division posts current fire restrictions and wildfire information on its website and offers an alert sign-up. Check the page before any campfire or burn.

• What to watch

  All month · Plains, highways and foothills

  Wind and dust, red flag fire weather, late snow in the highest northern peaks and swift snowmelt rivers are the month’s hazards. Heavy but local thunderstorms are possible on the eastern plains.

How much daylight does New Mexico gain in May?

What can you see in New Mexico’s night sky in May?

• Eta Aquariids at new moon

  Best mornings May 5, 6 and 7; peak night May 5 to 6 or May 6 to 7 depending on the source · Dark sites with a view to the east

  This shower comes from Halley’s Comet. With the Moon new on May 6, almost no moonlight interferes, which favors the shower this year. Watch in the last hours before dawn, because Aquarius, where the meteors appear to originate, only just rises before daybreak. Rates of roughly 10 to 30 an hour are typical in the southern two-thirds of the country, and one calendar cites about 30 an hour in the Northern Hemisphere. The sky begins to brighten near 5:44 a.m. in Albuquerque on May 5.

• The Flower Moon and a seasonal Blue Moon

  Full at 4:59 a.m. MDT on Thursday, May 20; best view the evening of Wednesday, May 19 · Anywhere with a clear eastern horizon

  In Albuquerque the sun sets at 8:06 p.m. on May 19 and the moon rises at 7:52 p.m., about a quarter hour earlier. Four full moons fall between the March 20 equinox and the June 21 solstice (March 22 and April 20 came first, June 19 follows). By the seasonal rule that predates the calendar-month one, the one in third place earns the Blue Moon name. Counting two full moons inside one calendar month gives no Blue Moon in 2027. Names come from folklore.

• Mercury at its best in the evening

  Greatest elongation Friday, May 28 (7:14 a.m. MDT); look May 12 to June 5 · Low in the west-northwest after sunset

  Mercury stands about 23 degrees east of the Sun on the 28th, which makes both May 27 and May 28 good evenings. Scan the west-northwest during the hour or so after dusk fades, ideally over a flat horizon. In Albuquerque the sun sets about 8:12 p.m. on May 27. The timing comes from our own calculations and one other calendar.

• Jupiter, the Moon and a hard conjunction

  Moon near Jupiter the evening of May 12; Venus and Saturn on the mornings of May 6 to 8 · High in the south for Jupiter; low in the east before sunrise for the pair

  The first-quarter Moon sits beside Jupiter on the evening of May 12, a good easy pairing. Early on May 7, Venus and Saturn are only about 0.6 degrees apart in Pisces, but both hug the eastern horizon before sunrise, so a clear view and binoculars are essential. Those pairings are our own calculations.

• Milky Way season begins

  Early to mid-May and late May · South, in the dark hours

  In our calculations for the central United States, the galaxy’s bright core clears the horizon during full darkness for as much as four hours during the first two weeks of May and again in the final week. Chaco Culture National Historical Park, a certified International Dark Sky Park since August 2013, runs summer evening programs that usually include telescope viewing and are held around the new moon in summer, depending on staffing. Check the park calendar.

What can New Mexico families do outdoors in May?

• City Nature Challenge

  Observations April 30 to May 3, 2027; identification May 4 to 16; results May 20 · Any smartphone, any city

  Organizers have posted these dates. Participants photograph or record wild plants and animals and share them through iNaturalist or a city’s chosen platform. The site does not say whether New Mexico cities have signed up for 2027, so check its participate page.

• World Migratory Bird Day

  Held each May; the 2027 date had not been posted · Parks, refuges and your yard

  The 2026 observance was May 9, with the theme “Every Bird Counts.” Organizers had not announced 2027 details when we looked, so look at the official site and ask the Bosque del Apache or Rio Grande Nature Center for local events.

• Smokey Bear Days and a firefighter observance

  Usually the first days of May and the Memorial Day period; check the park · Smokey Bear Historical Park, Capitan

  The state park in Capitan tells the story of the orphaned cub with burned paws found after a wildfire in the Capitan Mountains. It is open Tuesday through Sunday, 9 a.m. to 4:30 p.m. In 2026 it held Smokey Bear Days in early May and a Wildland Firefighter Observance on Memorial Day weekend. Dates for 2027 were not posted, so call the park at 575-354-2748.

• State park fees return

  From May 1 · New Mexico State Parks

  The resident exemption from day-use fees ends April 30. From May 1 residents pay $5 a day and non-residents $10, and camping fees apply year-round.

Safety notes for May in New Mexico

• Spring turkey season

  In 2026 the open season was April 15 to May 15; check the 2027 dates · Statewide, except closed areas listed in the rules

  In the state’s 2026–2027 hunting booklet, the spring turkey season for 2026 ran April 15 to May 15, and hunters could take two bearded birds. Only shotguns, bows and crossbows are legal. A new license year starts April 1, which means the 2027 season will be in the next booklet. Verify the dates, and dress brightly on forest trails during hunting weeks.

• Blaze orange

  Whenever you hunt or hike · Military land and Valles Caldera

  State rules demand blaze orange only in a few places, military reservations among them, though the department encourages every hunter to wear it.

• Hantavirus

  Any time of year, wherever mice live · Cabins, sheds and trailers

  The state health department says rodent control in and around the home is the main way to prevent hantavirus, which spreads through the urine, droppings or saliva of infected rodents when dust is breathed in. It lists 142 cases and 55 deaths statewide from 1975 through 2025. Air out closed buildings before you enter them.

• Heat, wind and fire

  May · Deserts, plains and foothills

  Carry water, start hikes early, and heed red flag warnings. Never park on dry grass.

• Sandia Crest closure

  Closure in place until further notice; projects run through fall 2027 · Ellis Trailhead and the road above the 10K lot

  The Cibola National Forest’s area closure began April 30, 2026, and the Forest Service says the projects affect access through fall 2027 and the closure stays in place until further notice. The La Luz Trail stays open up to the tramway, which keeps running.