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23,026 species in Illinois
Podilymbus podiceps
Regulus satrapa
Dryocopus pileatus
Culex pipiens
Spatula clypeata
Mergus serrator
Leiothlypis peregrina
Bucephala clangula
Butorides virescens
Actitis macularius
Hydroprogne caspia
Certhia americana
Buteo lineatus
Setophaga magnolia
Leiothlypis ruficapilla
Bucephala albeola
Antigone canadensis
Setophaga americana
Sitta canadensis
Mareca strepera
Mniotilta varia
Passerculus sandwichensis
Mimus polyglottos
Progne subis
Lophodytes cucullatus
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