List of birds of New Brunswick

New Brunswick is a Maritime province within Canada, bordered by Quebec to the north, Nova Scotia to the east, the Gulf of St. Lawrence to the northeast, the Bay of Fundy to the southeast, and the U.S. state of Maine to the west.^[1] Lying within the Appalachian Mountain range,^[2] the province is largely covered by temperate broadleaf and mixed forests, with the northern part of the province also containing boreal forest.^[3] The coastlines of the province contain a large marine environment.^[4] These different ecosystems contribute to the diversity of birds in the province.^[5] Additionally, the Atlantic Flyway passes through New Brunswick's coast, with areas within the Bay of Fundy such as the Shepody Bay significantly contributing to the variety of bird species that breed in or migrate through the province.^[6][7]

The information provided is from the list of bird species accepted by the New Brunswick Bird Records Committee (NBBRC), which contains 441 species as of November 19, 2023.^[8][9] Of these, 94 are accidentals and 55 are noted as rare as defined below. Eight species have been introduced to North America, one species has been extirpated, three are extinct, and another is possibly extinct. This list is presented in the taxonomic sequence of the Check-list of North and Middle American Birds, 7th edition through the 62nd Supplement, published by the American Ornithological Society (AOS).^[10] Common and scientific names are also those of the Check-list, except that Canadian English spellings are used and the common names of families are from the Clements taxonomy because the AOS list does not include them.

The following tags are used to categorise some species:

• (A) Accidental - a species that does not often occur in New Brunswick as a vagrant
• (B) Breeding - a species that currently breeds or has bred in New Brunswick
• (E) Extinct - a recent species that no longer exists
• (Ex) Extirpated - a species that no longer occurs in New Brunswick, but populations still exist elsewhere
• (R) Rare - "Very rare (not expected annually)" per the NBBRC
• (I) Introduced - a species that has been introduced through human intervention, either directly or indirectly