What to look for in nature in Oklahoma this April

Which summer birds come back to Oklahoma in April?

• Black-capped vireo

  Usually arrives in mid-April and stays until mid-September · Wichita Mountains Wildlife Refuge and Fort Sill in Comanche and Kiowa counties; smaller numbers at Quartz Mountain and in Blaine County

  The Wildlife Department says vireos nest in low, brushy, scattered thickets of deciduous trees, especially blackjack oak, with the nest set four to eight feet up in a short, scrubby tree. Males have a black cap that covers almost the whole head except around the eyes, which gives them a spectacled look. When the species was listed as endangered in 1987, fewer than 50 birds were known in Oklahoma. The Department reported more than 4,000 by 2018, the year the federal listing ended, though one of its field-guide pages counts about 4,000 pairs, so treat the number as roughly four thousand. The Department credits managed habitat, and it lists the brown-headed cowbird, which lays its eggs in other birds’ nests, as a threat to the species. An Audubon guide to the state gives April through August as the time the vireo is present at the refuge, and names the Elk Mountain trail and the Quanah Parker Lake dam area as places to try. Stay on the trail: the birds nest close to the ground.

• Scissor-tailed flycatcher

  Seen from early April to late October; a few show up in late March · Fence lines, utility wires and open country statewide

  Oklahoma’s state bird is easy to spot because of a tail that can reach nine inches. Males put on a courtship display in which they climb about 100 feet and then tumble in a V-shaped dive while calling. The Department says grasshoppers can make up more than half of what a flycatcher eats, which explains why the birds arrive when insects begin to stir. Females build the nest 7 to 30 feet up on a horizontal limb or fork, and typically raise two broods. Jot down the date of your first one on a birds I have seen page.

• Wild turkeys on the display grounds

  Gobbling is at its peak in the early morning; hens begin nesting in April and May · Rio Grande turkeys in western Oklahoma; Eastern turkeys in the east and southeast

  The Department’s 2026 Gobbler Report said turkey numbers were rising in the northwest and the northeast, with a slight increase in the central region, and that hens were already choosing nest sites. The gobble is used mainly in spring to tell hens where a male is. Males strut in open ground, and their wingtips leave two parallel lines in the dirt. The Department describes Rio Grande turkeys of the west as birds of open ground, and Eastern turkeys as cautious. Because hens are nesting, a walk in April is a good time to keep dogs leashed and stay on the trail. The spring hunting seasons are listed in the safety notes below.

Where do warblers and other migrants stop in Oklahoma in April?

• Warblers in the eastern woods

  Builds through April; migration at Red Slough peaks in May · Red Slough, Cookson and Blue River wildlife management areas; wooded creeks in the east

  The Department counts 42 warbler species in Oklahoma. Some settle in the eastern half of the state for the summer and others stop only for a few days or weeks on the way north. Its advice is to search trees and shrubs near creeks and small rivers, and flowering trees that draw small insects. Expect to identify many birds by facial pattern or the amount of streaking, and expect a sore neck. Red Slough, a 5,814-acre wetland complex in McCurtain County, has recorded more than 300 bird species. The Department says migration there peaks in May, when visitors often see 100 or more species, and an Audubon guide names prothonotary, yellow-throated and prairie warblers among its birds. Wildlife management areas can have hunting and area-specific rules, so check the Department’s page for each before you go.

• Where to watch the migration forecast

  BirdCast’s forecast season runs March 1 to June 15 · Any clear night; look at the forecast map for Oklahoma

  BirdCast, from the Cornell Lab of Ornithology, posts live migration maps, forecast maps and a county-level dashboard for the contiguous United States. It says more than 80 percent of migratory species travel at night. On a night with a strong southerly flow and a forecast of heavy migration, expect new birds in parks and thickets at dawn. The project also asks people to turn off unneeded outdoor lights and make glass visible, since lights and windows are hazards for night migrants.

• Birds of the far west

  Spring passage in the Panhandle · Black Mesa area in the western Panhandle, and Salt Plains National Wildlife Refuge

  An Audubon guide to the state lists black-chinned hummingbird, vermilion flycatcher and Say’s phoebe at Black Mesa, with Sprague’s pipit passing through in spring. At Salt Plains, the refuge says white pelicans stop over in spring and fall, and its salt flats hold nesting snowy plovers and avocets. The Department places least tern nests later, from late May into mid-July.

Why is the Oklahoma prairie burning in April, and what grows back?

• Osage County burns

  Early March to late April on average · Tallgrass prairie in Osage County, around Pawhuska

  A Tulsa television report from April 2021 quoted Osage County firefighters who said smoke is a weekly occurrence in spring and that most plumes are prescribed burns on ranches. A rancher said the aim is more pounds of grass per acre, and that burning also removes old growth and invasive plants. The same report warned that conditions can turn quickly if the wind shifts, and advised anyone planning to burn, large or small, to call the local fire department first.

• A preserve that burns in patches

  Booming continues at sunrise through early May; in April the big bluestem and switchgrass are growing · Joseph H. Williams Tallgrass Prairie Preserve near Pawhuska

  The Nature Conservancy says the preserve has used prescribed fire as a conservation tool since 1993. The page describes April as the month when signature grasses such as big bluestem and switchgrass are thriving, and says the greater prairie-chickens keep booming at dawn until early May. Wildflowers cover the fields from mid-May through mid-June, so in April the color is mostly green and the movement is bison and birds. The preserve is open in daylight hours every day and has three self-guided trails from half a mile to two miles.

What blooms and leafs out in Oklahoma in April?

• Purple poppy-mallow, or winecup

  Average first flowers April 13 in the old Norman records · Pastures, roadsides and prairie

  A low prairie plant with showy flowers, often called winecup. It is one of the first native flowers of April on open ground, and a good one to watch in a patch you pass every day.

• Wild blue indigo, spiderwort and loco-weed

  Western spiderwort and stemless loco-weed average April 24; blue false-indigo averages April 27, with the earliest record April 25 · Prairie, open woods and rocky hillsides

  The old records shift the palette toward blue and purple late in April. The same report lists black locust at an April 20 average, southern black-haw at April 19 and wild columbine with a first record on April 8, so a good walk in the second half of the month can include a dozen flowers.

• Indian paintbrush and the refuge meadows

  The show builds into May; a May 2016 refuge tour article was already seeing coreopsis fields coming · Wichita Mountains Wildlife Refuge and the prairies around it

  The Army’s write-up of a May 2016 wildflower tour at the refuge named least daisies, Indian paintbrush, Bailey’s barrel cactus, penstemon, yellow coreopsis, threadleaf thelesperma and prickly pear. April is the early act, so expect scattered paintbrush bracts rather than wall-to-wall color, and rainfall decides how big the later show becomes.

• Oaks, pecan and black walnut

  Blackjack oak averages April 4, post oak April 17, burr oak April 23, pecan April 27 and black walnut April 30 · Cross Timbers woods, river bottoms and town yards

  Osborn counted a plant as in bloom when its flowers opened, and for trees such as oaks the flowers are small catkins that open while the leaves are unfolding. Watch the post-oak and blackjack hills turn from bare gray to fuzzy green over about two weeks, with pecans and walnuts coming last. A late freeze at this stage can cost the tender growth, so check the frost table below.

Which frogs, toads and lizards are active in Oklahoma in April?

• Gray treefrogs and Cope’s gray treefrogs

  Begin with the first warm rains; the largest choruses are in late April and May · Farm ponds, roadside ditches, temporary ponds and forested swamps in the eastern half of the state and some adjacent southwestern counties

  The Wildlife Department says the two species look nearly alike and breed in the same ponds on the same nights. Their calls differ: the gray treefrog gives a melodic trill at about 22 pulses a second, while Cope’s gray treefrog trills faster, about 35.7 pulses a second, with a harsher sound. Both are small and well camouflaged, so the sound is usually the only clue.

• Great Plains toad

  Explosive breeding after heavy spring rain; calls are heard in late spring and early summer · Sandy prairie, flooded fields and buffalo wallows in the plains

  The Department’s page describes a long, loud trill that carries a long way, and says the toads breed in temporary pools. They appear after the first heavy storms. A pasture that was dry on Tuesday can sound like a machine on Thursday night.

• Texas horned lizard

  Adults emerge in late April and early May, according to an Oklahoma study · Open ground with harvester ants; check the Department’s sightings page

  A U.S. Geological Survey record of a study in Payne County says adults leave hibernation in late April and early May, and that males travel more than females in May while searching for mates. The Department says harvester ants make up most of the diet, up to about 70 ants a day, and recommends searching slowly on paved and unpaved roads in mid- to late morning in spring. The species is of greatest conservation need, and the Department runs a sightings form: biologists said in 2025 that the project had gathered just under 1,100 sightings in about six years. Photograph from a distance, do not pick one up, and send the place and date to the Department.

When do white bass, crappie and paddlefish run in Oklahoma in April?

• White bass runs

  Mid-March through early May, with a one-to-three-week window on any one lake · Tributaries such as Medicine and Canyon creeks at Lake Lawtonka, the North Canadian above Canton Lake, Wolf Creek at Fort Supply, the Spring River above Grand Lake, and the Mountain Fork above Broken Bow

  The Wildlife Department’s guide says the urge to spawn begins at a water temperature of 50 °F and peaks near 55 °F, and that moderate rain and temperatures from 55 to 60 °F make for a big run. Longtime anglers use blooming redbuds as the signal. Small creeks need some rain to carry fish upstream, which is why a week of dry weather can end a run in a day.

• Crappie and sunfish on the nest

  Black crappie spawn near 52 °F and white crappie near 56 °F; sunfish fishing improves in April and May · Brushy shallows and docks at lakes statewide

  The Department notes that male crappie guard the eggs and fry and stay aggressive, which gives anglers an extra week or so of heavy bites. It adds that a worm and bobber along riprap works for channel catfish from late April into May.

• Paddlefish season

  Spawning runs from March through June; snagging usually begins in March and ends in late April · Grand, Hudson, Fort Gibson, Keystone and Oologah lakes and the Kaw Lake tailwaters; the Arkansas, Neosho, Verdigris, Canadian, Kiamichi and Red river systems

  A free paddlefish permit is required in addition to a fishing license. The Department says any fish that is kept must be tagged at once, cannot be released afterward, ends the angler’s snagging for the day, and must be checked in electronically within 24 hours. Catch and release is allowed and encouraged. Exact 2027 dates and area rules were not yet posted when this page was written, so read the current regulations on the Department’s fishing pages.

How warm, wet and stormy is April in Oklahoma?

Is a freeze still possible in Oklahoma in April?

How much daylight does Oklahoma gain in April?

What is in the Oklahoma night sky in April 2027?

• Dark skies and the Milky Way

  Early in the month, around the April 6 new moon; our calculation puts good pre-dawn nights at April 1 to 14, and again at the end of the month · Dark country away from town lights, such as the Panhandle, the Ouachitas and the Wichita Mountains

  This is the season when the bright center of the Milky Way starts to rise before dawn. For central latitudes, our calculation gives up to about two hours of dark sky with the galactic core above the horizon in the pre-dawn hours, with the best nights April 1 to 14 and April 27 to 30. It is a faint, low band in the south-southeast, so you need a flat horizon and twenty minutes for your eyes to adapt.

• The Moon visits the Pleiades, then Jupiter

  Around April 10 for the Pleiades; evenings of Wednesday and Thursday, April 14 and 15, for Jupiter · Western sky after dark for the Pleiades; high in the south for Jupiter

  By our calculation the young crescent sits right by the Pleiades on the 10th, and binoculars fill the view with stars. Jupiter takes over on April 14 and 15, when the brilliant planet lies less than a degree from the Moon, which is roughly 68 percent lit. Mars, a dim reddish dot, sits not far off on the 15th. Jupiter is out most of the night all month and does not set until the small hours.

• The Pink Moon

  Full on Tuesday, April 20, at 5:27 p.m. CDT · Anywhere with an open eastern horizon

  Pink Moon is simply the traditional name for April’s full Moon. The instant of fullness comes at 5:27 p.m., before moonrise, so the disk looks round on the evenings of April 19 and again on the 20th. Watch for it climbing out of the horizon haze near sunset.

• The Lyrid meteors, in a poor year

  Peak about 8:41 p.m. CDT on Thursday, April 22; active about April 14 to 30 · A dark field with a wide view of the northeast

  The shower’s maximum is predicted for 01:41 UT on April 23, which is 8:41 p.m. on April 22 in Oklahoma (our own calculation puts it about 14 minutes later). The Moon, still 95 percent illuminated just after full, does not clear the horizon until about 10 p.m. That leaves only the early evening for dark-sky viewing, while the constellation Lyra sits low in the northeast. The International Meteor Organization’s excerpt calls the conditions poor. Expect a few meteors an hour. The Lyrids sometimes surprise with a short burst, but no one can predict that.

Which nature programs and citizen science projects can you join in Oklahoma in April 2027?

Safety notes for April in Oklahoma