
Acorn Woodpecker
A striking woodpecker linked to oak woodland and acorn food stores.
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Nature Field Guide
Explore wildlife, plants and trees. Learn what to look for and where to find them.
72 profiles

A striking woodpecker linked to oak woodland and acorn food stores.
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Anhingas swim underwater after fish and use straight pointed bills to seize prey.
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An orange-and-black seasonal visitor from the north.
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An elusive forest bird with a striking crest and important seed-dispersal role.
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This robust tropical heron uses mangroves and freshwater wetlands.
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A dark mountain-forest bird with a blue face and red eyes.
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A dark scavenger with white patches under the wingtips.
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This large plover breeds in the far north and uses coasts outside breeding.
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A compact heron whose feeding day often begins at dusk.
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A cloud-forest singer often heard before it is seen.
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Black-necked Stilts have exceptionally long pink legs, a thin straight dark bill and contrasting black-and-white plumage.
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A powder-blue bird of gardens and wooded clearings.
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The Boat-billed Heron has an unusually wide flattened bill and large dark eyes.
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A long bill with a pouch beneath the lower jaw.
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A familiar brown songbird and Costa Rica’s national bird.
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Cocos Boobies are eastern Pacific seabirds formerly included with Brown Booby.
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A small toucan with a patterned yellow chest.
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A rusty forest cuckoo with an exceptionally long tail.
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A tiny hummingbird found naturally only in Costa Rica.
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A long-legged raptor that often walks on the ground.
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A warm-brown duck with a long neck and a whistling voice.
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This large heron searches shallow water for fish and other small animals.
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A large forest bird with a curled crest and contrasting male and female plumage.
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The Great Egret is a large white wading bird that hunts by waiting or walking slowly in shallow water.
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A green forest giant whose future depends on large nesting trees.
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A loud flycatcher with a yellow belly and striped head.
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A camouflaged forest-floor bird with a far-carrying whistle.
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The Green Heron is a compact hunter with a dark greenish back, chestnut neck and a short crest.
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A social black bird with grooves on its heavy bill.
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A black-and-white woodpecker with a yellow nape.
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This large shorebird uses its long downward-curved bill to find crabs and other small animals on coastal flats.
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A towering white wetland bird with a dark head and red neck band.
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A rainbow-colored bill stands out against dark plumage and a yellow throat.
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A masked falcon named for its far-carrying call.
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Laughing Gulls are coastal gulls with dark gray backs and blackish wingtips.
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A colorful forest bird with a blue crown and long tail.
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Adults have slate-blue bodies and purplish heads and necks.
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A small forest bird famous for coordinated courtship displays.
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Frigatebirds use very long wings and a deeply forked tail to soar above tropical coasts.
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A large chestnut bird with a yellow-sided tail.
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This dark waterbird catches fish by diving and swimming underwater.
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An agile green parakeet with an orange forehead and long pointed tail.
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The Osprey is a large raptor that catches fish with its feet.
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A small bird with red feet and a slender curved bill.
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A cloud-forest fruit eater with brilliant green plumage.
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A compact hawk often seen near woodland edges.
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A pink wading bird that sweeps a spoon-shaped bill through shallow water.
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The Royal Tern is a large pale coastal tern with a substantial orange bill and ragged dark crest.
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A Ruddy Turnstone uses a short sturdy bill to flip small objects and search for hidden invertebrates.
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A green hummingbird with a rusty tail.
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Red, yellow and blue wings brighten Costa Rica’s Pacific forests.
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A tanager whose male has a brilliant scarlet rump.
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This small plover usually searches open flats with short runs and pauses.
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This slender white egret often feeds actively in shallow coastal water.
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Spotted Sandpipers often bob their tails while walking along water edges.
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A seasonal tanager whose adult male is red all over.
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A streamside bird whose patterned wings reveal a hidden surprise.
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Listen for a remarkable call high above the cloud-forest trail.
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A white belly and pale stripe along the front of the neck distinguish this slender heron from the uniformly dark adult Little Blue Heron.
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A yellow-bellied flycatcher often seen on an open perch.
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A soaring scavenger with a red adult head.
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A turquoise eyebrow and racket-shaped tail make this bird memorable.
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A large hummingbird with violet plumage and white tail corners.
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Western Sandpipers are tiny migratory shorebirds that feed on tidal flats.
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A pale forest raptor that watches patiently for prey.
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A long, downward-curving bill.
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A hummingbird with a blue hood and a mostly white tail.
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A sociable jay with a sweeping blue tail and curled crest.
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A Willet has a sturdy straight bill and long grayish legs.
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The Wood Stork is a large white wader with black flight feathers and a mostly bare dark adult head.
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This sturdy heron often hunts crabs and other crustaceans around coastal wetlands.
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A large toucan with a yellow throat and chestnut-toned bill.
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