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23,026   species in Illinois

Species results

Olive-sided Flycatcher
12,157 obs

Olive-sided Flycatcher

Contopus cooperi
American Golden-Plover
11,877 obs

American Golden-Plover

Pluvialis dominica
Short-billed Dowitcher
11,825 obs

Short-billed Dowitcher

Limnodromus griseus
Eastern Gray Squirrel
11,610 obs

Eastern Gray Squirrel

Sciurus carolinensis
Piping Plover
11,536 obs

Piping Plover

Charadrius melodus
Eastern Screech-Owl
11,423 obs
🌙 Nocturnal

Eastern Screech-Owl

Megascops asio
Lesser Black-backed Gull
11,292 obs

Lesser Black-backed Gull

Larus fuscus
Small White
11,282 obs
🦀 Exoskeleton 🦋 Metamorphosis

Small White

Pieris rapae
Western Honey Bee
11,191 obs
🐜 Eusocial 🦀 Exoskeleton

Western Honey Bee

Apis mellifera
Prairie Warbler
11,050 obs
🌍 Migratory

Prairie Warbler

Setophaga discolor
Pearl Crescent
10,741 obs
🦀 Exoskeleton 🦋 Metamorphosis

Pearl Crescent

Phyciodes tharos
Sapphire-striped Mosquito
10,725 obs
🤧 Allergenic 🩸 Blood-feeding

Sapphire-striped Mosquito

Uranotaenia sapphirina
Snow Bunting
10,577 obs
Migratory

Snow Bunting

Plectrophenax nivalis
Virginia Rail
10,490 obs

Virginia Rail

Rallus limicola
Black-billed Cuckoo
10,326 obs

Black-billed Cuckoo

Coccyzus erythropthalmus
White-winged Scoter
10,238 obs
🌍 Migratory

White-winged Scoter

Melanitta deglandi
Alder Flycatcher
10,135 obs

Alder Flycatcher

Empidonax alnorum
Northern Frog-biting Mosquito
10,122 obs
🤧 Allergenic 🩸 Blood-feeding

Northern Frog-biting Mosquito

Culex territans
Ross's Goose
10,070 obs
🌿 Herbivore 🌍 Migratory

Ross's Goose

Anser rossii
Black Swallowtail
9,959 obs
🦀 Exoskeleton 🦋 Metamorphosis

Black Swallowtail

Papilio polyxenes
Short-eared Owl
9,810 obs
🌙 Nocturnal

Short-eared Owl

Asio flammeus
Black-bellied Plover
9,374 obs

Black-bellied Plover

Pluvialis squatarola
Clay-colored Sparrow
9,342 obs

Clay-colored Sparrow

Spizella pallida
Black Tern
9,286 obs

Black Tern

Chlidonias niger
Common Gallinule
9,120 obs

Common Gallinule

Gallinula galeata