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Black-billed Cuckoo. Fyn Kynd CC BY 2.0

invasive

Black-Billed Cuckoo

Bird - Coccyzus erythropthalmus

invasive

Black-capped Chickadee

Bird - Poecile atricapillus

Black Footed Ferret. Ryan Jones/CPW

invasive

Federally Endangered, State Endangered

Black-Footed Ferret

Mammal - Mustela nigripes

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Black-necked garter snake, NPS

invasive

Black-necked Garter Snake

Reptile - Thamnophis cyrtopsis

Black-tailed Jackrabbit, Wayne D. Lewis

invasive

Black-Tailed Jackrabbit

Mammal - Lepus californicus

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bluegill illustration by Joseph R. Tomelleri.

invasive

Bluegill

Fish - Lepomis macrochirus

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bonytail chub illustration by Joseph R. Tomelleri.

invasive

Federally Endangered, State Endangered

Bonytail Chub

Fish - Gila elegans

Boreal chorus frog, Tom Koerner, FWS

invasive

Boreal Chorus Frog

Amphibian - Pseudacris maculata

invasive

State Endangered

Boreal Toad

Amphibian - Bufo boreas boreas, Bufo boreas complex

Brassy Minnow illustration By Ellen Edmondson And Hugh Crisp

invasive

State Threatened

Brassy Minnow

Fish - Hybognathus hankinsoni