
Periodical Cicadas
Missouri’s periodical cicadas are not an annual attraction: the forest-wide chorus arrives only when a mapped 13- or 17-year brood emerges.
Browse the published Explore collection for Pennsylvania, United States. Open a discovery for its field guide, practical details, and background.

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

This ocean-going herring returns to fresh water each spring, reconnecting the Connecticut River with the Atlantic in one powerful migration.

New Hampshire’s state bird is a stout forest finch whose males look washed in raspberry and whose movements follow shifting seed crops.

America’s most widespread bear is often easier to recognize by tracks, clawed logs, and overturned stones than by a direct sighting.

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

Mottled bark-colored plumage, a dark tail band, and the male’s accelerating wing-drumming suit dense young forest better than open lawn.

Spotted breast, plain face, and a reddish tail contrasting with a browner back identify the thrush behind one of Vermont’s clearest woodland songs.

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.

Glossy evergreen leaves and clustered pink-white cups patterned with ten pockets identify Connecticut’s state flower.

Spiny evergreen leaves, pale bark, and red winter fruit identify a native holly once central to Delaware wreath making.

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.

Flat short needles with pale undersides, tiny hanging cones, and drooping twig tips identify Pennsylvania’s state tree.

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.

A small social bat winters in a few cold caves, migrates to summer forest roosts, and carries the name of the state where science first described it.

Ohio’s namesake tree is a small-to-medium woodland understory species recognized by five leaflets, upright yellow-green flower clusters, and mahogany seeds marked with a pale eye.

A palm-sized shorebird nests almost invisibly on Great Lakes beaches, where one footprint, loose dog, or sudden water rise can matter.

An armor-plated fish can live for more than a century, migrating from Lake Winnebago into rocky rivers for a brief, spectacular spring spawn.

This crisp gray-and-gold migrant thrives not in deep forest or open field, but in the shifting edge between them—a habitat easy to erase by accident.

Minnesota’s state fish is a low-light predator whose famous eyes, seasonal movements, and lake-by-lake management make it more interesting than a dinner plate.

A warm-brown wren with a white eyebrow lives close to cover across South Carolina and serves as the state bird.

North America’s largest wolf spider patrols open ground after dark and is South Carolina’s official state spider.

This large striped butterfly, South Carolina’s state butterfly, moves between tree canopies, flowers, puddles, and host plants.

South Carolina’s state insect is a gray, green, or brown ambush predator of gardens, old fields, and woodland edges.

Black wings checked with cream and orange identify a wet-meadow butterfly whose official status contrasts with its rarity in Maryland.

Maryland’s orange-and-black state bird whistles from leafy edges and suspends a woven pouch nest near a branch tip.

Rough-haired stems and golden rays around a raised brown center make Maryland’s state flower a familiar open-ground wildflower.

Maryland’s state tree supports insects and wildlife; rounded leaf lobes and pale bark reward a slower look in mature woodland.

Beyond its famous staircase, Philadelphia’s landmark art museum rewards close looking across global collections and a building worth reading in its own right.

Barnes’s densely arranged ensembles invite you to connect color, line, ironwork, and objects across artists and eras.

Frank Lloyd Wright’s cantilevered house reaches over Bear Run, joining modern architecture to stone, forest, and falling water.

Fountains, conservatories, woodlands, and meadow plantings make Longwood a designed landscape that changes dramatically by season and time of day.

The Assembly Room witnessed both the Declaration of Independence and the Constitution—two revolutions in government, separated by eleven contentious years.

The battlefield's ridges, fields, roads, and memorials make the three-day 1863 battle legible as geography as well as national memory.

Walk a radial-plan nineteenth-century prison, then confront what its reform experiment reveals about incarceration and justice today.

The Youghiogheny River cuts a dramatic gorge through Ohiopyle, with easy falls views, strenuous trails, and renowned whitewater in one park.

Dinosaurs in Their Time puts Carnegie's fossil discoveries into recreated ancient ecosystems, not just rows of impressive skeletons.

Warhol's screenprints, films, archives, and changing exhibitions trace how a commercial illustrator remade the language of modern images.