This is a list of the bird species recorded of Palmyra Atoll. The avifauna of Palmyra Atoll include a total of 52 species. The atoll is an American wildlife refuge almost due south of the Hawaiian Islands, roughly one-third of the way between Hawaii and American Samoa.
This list's taxonomic treatment (designation and sequence of orders, families and species) and nomenclature (common and scientific names) follow the conventions of The Clements Checklist of Birds of the World, 2022 edition. The family accounts at the beginning of each heading reflect this taxonomy, as do the species counts found in each family account. Introduced and accidental species are included in the total counts for Palmyra Atoll.
The following tag has been used to highlight accidental species.
- (A) Accidental - a species that rarely or accidentally occurs on Palmyra Atoll
Order: Anseriformes Family: Anatidae
Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to an aquatic existence with webbed feet, flattened bills, and feathers that are excellent at shedding water due to an oily coating.
Order: Charadriiformes Family: Charadriidae
The family Charadriidae includes the plovers, dotterels and lapwings. They are small to medium-sized birds with compact bodies, short, thick necks and long, usually pointed, wings. They are found in open country worldwide, mostly in habitats near water.
Order: Charadriiformes Family: Laridae
Laridae is a family of medium to large seabirds, the gulls, terns, and skimmers. Gulls are typically grey or white, often with black markings on the head or wings. They have stout, longish bills and webbed feet. Terns are a group of generally medium to large seabirds typically with grey or white plumage, often with black markings on the head. Most terns hunt fish by diving but some pick insects off the surface of fresh water. Terns are generally long-lived birds, with several species known to live in excess of 30 years.
Order: Procellariiformes Family: Hydrobatidae
Though the members of this family are similar in many respects to the southern storm-petrels, including their general appearance and habits, there are enough genetic differences to warrant their placement in a separate family.
Order: Procellariiformes Family: Procellariidae
The procellariids are the main group of medium-sized "true petrels", characterised by united nostrils with medium septum and a long outer functional primary.
- Kermadec petrel, Pterodroma neglecta
- Murphy's petrel, Pterodroma ultima (A)
- Mottled petrel, Pterodroma inexpectata
- Hawaiian petrel, Pterodroma sandwichensis
- Black-winged petrel, Pterodroma nigripennis
- Bulwer's petrel, Bulweria bulwerii
- Wedge-tailed shearwater, Ardenna pacificus
- Buller's shearwater, Ardenna bulleri
- Sooty shearwater, Ardenna grisea (A)
- Short-tailed shearwater, Ardenna tenuirostris
- Christmas shearwater, Puffinus nativitatis
- Newell's shearwater, Puffinus newelli
- Tropical shearwater, Puffinus bailloni
Order: Suliformes Family: Fregatidae
Frigatebirds are large seabirds usually found over tropical oceans. They are large, black and white or completely black, with long wings and deeply forked tails. The males have coloured inflatable throat pouches. They do not swim or walk and cannot take off from a flat surface. Having the largest wingspan-to-body-weight ratio of any bird, they are essentially aerial, able to stay aloft for more than a week.
Order: Pelecaniformes Family: Ardeidae
The family Ardeidae contains the bitterns, herons, and egrets. Herons and egrets are medium to large wading birds with long necks and legs. Bitterns tend to be shorter necked and more wary. Members of Ardeidae fly with their necks retracted, unlike other long-necked birds such as storks, ibises and spoonbills.