This list of birds of Nebraska includes species documented in the U.S. state of Nebraska and accepted by Nebraska Ornithologists' Union (NOU). As of August 2021, there are 467 species included in the official list. Of them, 95 are classed as accidental, 19 are classed as casual, two are extinct, and three have been extirpated. Four have been introduced to North America. Unless otherwise noted, all species listed below are considered to occur regularly in Nebraska as permanent residents, summer or winter visitors, or migrants. These tags are used to annotate some species: