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23,941 species in Pennsylvania
Mergus serrator
Empidonax minimus
Leiothlypis peregrina
Cygnus columbianus
Leiothlypis ruficapilla
Setophaga tigrina
Bucephala clangula
Micropterus salmoides
Euphagus carolinus
Melanerpes erythrocephalus
Parkesia noveboracensis
Spatula discors
Lepomis macrochirus
Aythya americana
Larus fuscus
Chroicocephalus philadelphia
Cardellina canadensis
Salvelinus fontinalis
Strix varia
Setophaga castanea
Chordeiles minor
Petrochelidon pyrrhonota
Danaus plexippus
Phasianus colchicus
Aythya marila
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