This summary of the birds of Nebraska has been restricted to those
species that have been convincingly reported at least once in Nebraska
from historic time to the present. It has also been modified in its
current revision to conform very closely in that regard to the most
recent Nebraska Ornithologists' Union's "Official List of the Birds of
Nebraska" (Brogie, 2010; NOU Records Committee, 2011 and annual
updates). The N.O.U.'s official state list of birds (455 species as of
2013, including 329 "regular" species, 42 of "casual" occurrence, 68
accidentals, and six extinct or extirpated species) is based on actual
specimen evidence or some other convincing basis of each species' proven
occurrence in the state. I have followed the N.O.U. species list
closely, although my terms of relative abundance and status often
differ. The latest American Ornithologists' Union taxonomy (AOU
Check-list of North American Birds, 7th edition and later supplements)
is followed here.