<P> This list contains 1105 species . Of them , 135 are tagged as accidental , 95 as casual , and 57 as introduced . Thirty - three are known to be extinct and one , the thick - billed parrot , has been extirpated though a population remains in Mexico . Thirty - three living species are endemic to Hawaii and an additional 28 former endemics are known to be extinct . Fifteen species are endemic to the 48 contiguous states . </P>
<P> This list contains 1105 species . Of them , 135 are tagged as accidental , 95 as casual , and 57 as introduced . Thirty - three are known to be extinct and one , the thick - billed parrot , has been extirpated though a population remains in Mexico . Thirty - three living species are endemic to Hawaii and an additional 28 former endemics are known to be extinct . Fifteen species are endemic to the 48 contiguous states . </P>
how many species of birds in the us
how many species of birds in the us
1105
1105