
Great Horned Owl
Massive owl with ear tufts, a deep paired hoot, and formidable dusk hunting ability
Browse the published Explore collection for Illinois, United States. Open a discovery for its field guide, practical details, and background.

Massive owl with ear tufts, a deep paired hoot, and formidable dusk hunting ability

Pale heart-faced owl that floats low over fields while listening for prey beneath grass

Long-tailed blackbird with a pale eye, bronze gloss, and a rusty mechanical voice

Small bouncing finch with black wings, a musical flight call, and dramatic seasonal plumage

Chunky introduced sparrow closely tied to buildings, livestock areas, sidewalks, and busy human settlement

Glossy introduced bird with a pointed bill, triangular wings, and astonishingly coordinated winter flocks

Stocky aquatic rodent with a vertically flattened tail, compact lodge, and busy wetland feeding routes

Dark, low-slung mustelid moving quickly along water edges while hunting on land and underwater

Slender ground squirrel striped with alternating pale lines and spots, often upright beside prairie burrows

Small blunt-faced vole hidden within woven runways beneath dense grass, seldom crossing open ground

Large blotched snake that hisses loudly, imitates a rattlesnake convincingly, but remains nonvenomous

Striped garter snake with a bold orange-yellow back stripe, especially at home near prairie wetlands

This long-faced native bumble bee connects deep prairie flowers to an underground social colony that lasts only one growing season.

Little bluestem turns an ordinary-looking summer bunchgrass into one of the prairie’s most luminous copper winter plants.

A compass plant can spend decades building a taproot before raising its rough flower stalk above nearly every neighboring prairie plant.

Leadplant is a prairie shrub disguised as a wildflower: silver-haired leaflets and purple one-petaled blooms sit above woody stems and roots that reach deep into dry Kansas ground.

Cottonwoods trace water across the plains, their restless leaves revealing river corridors from miles away.

Thick bark and an enormous root system let bur oak stand where prairie fire, drought, and winter test less durable trees.

A familiar Kansas creek-and-street tree becomes unmistakable at arm’s length: corky bark ridges, sandpapery three-veined leaves with crooked bases, and dark winter fruit crowded with birds.

A loud summer katydid reveals itself by a buzz longer than a second, repeated about every two seconds, before its black-bottomed head cone comes into view.

Nebraska’s floral emblem is a late-summer colony, not one giant flower: arching branches carry hundreds of tiny golden heads above a smooth bluish stem alive with visiting insects.

Eastern redcedar can be both winter shelter and ecological warning: a useful native tree that transforms grassland when fire disappears.

The Ozark swallowtail is a subtle regional specialist whose identity depends as much on place and behavior as on wing pattern.

Missouri’s periodical cicadas are not an annual attraction: the forest-wide chorus arrives only when a mapped 13- or 17-year brood emerges.

The familiar summer flash is a coded courtship signal, with each species using its own timing, height, and shape in darkness.

A luna moth’s luminous green adult life lasts roughly a week, devoted entirely to finding a mate rather than eating.

Its lemon-yellow flowers open toward evening, transforming a harsh limestone glade just as sphinx moths begin to fly.

Missouri’s prairie giant builds a warm-season canopy above the flowers and a far larger architecture belowground, where dense roots helped create and still stabilize tallgrass soil.

A familiar garden flower becomes more interesting in the wild, where its stiff cone feeds pollinators in summer and finches in winter.

Few Missouri flowers match cardinal flower’s red, a color and tubular shape tuned especially well to hummingbird vision and bills.

From a distance Rose Verbena can masquerade as a patch of phlox; at knee level, its hairy trailing stems, rooted nodes, and opposite three-part toothed leaves give the glade plant away.

Dogwood’s famous white “petals” are actually bracts framing a compact bouquet of tiny true flowers.

Black walnut combines valuable dark timber with a green-husked fruit whose hidden shell demands patience from squirrels and people alike.

Black cap, white cheeks, small bib, and a curious approach make this year-round northern songbird a foundational backyard identification.

Dark eye stripe, kinked long wings, and reversible outer toes identify the fish specialist nesting beside Oregon waters.

A jaw extending behind the eye, deep body, and dark side stripe separate largemouth bass from their smaller-mouthed relatives.

A deep compressed body, dark ear flap, and blue-green cheek identify a widespread sunfish that rewards close looking.

Duckbill snout, rear-set fins, and pale bean-shaped spots identify the pike waiting almost motionless beside cover.

Orange wings with heavy black veins identify a migrant whose caterpillars can eat only milkweeds and whose journey outlasts any one summer adult.

Large size, bright green thorax, and a dark bull’s-eye on the forehead help identify a darner capable of continental movement.

Paired rows of yellow spots and an orange-centered hindwing eye distinguish a butterfly whose striped caterpillar feeds on carrots’ wild relatives.

A dark firefly with pale margins and an angular shield pattern, Say’s firefly turns summer dusk into species-specific communication.

Three broad leaves, three white petals, and a flower held above a single whorl mark Ohio’s woodland wildflower.

Opposite broad leaves, milky sap, round pink flower clusters, and warty pods identify a plant central to monarch development.

Bristle-tipped leaf lobes, shallow-striped bark, and broad acorns distinguish New Jersey’s state tree from rounded-lobed white oaks.

Four-lobed leaves with a notched flat tip and green-orange tulip-like flowers identify one of eastern North America’s tallest hardwoods.

Red buds, flowers, leaf stalks, and paired winged seeds recur across the year on Rhode Island’s adaptable state tree.

Long flexible needles grouped in fives, slender cones, and layered horizontal branches identify the eastern white pine.