| Common Name | Scientific name |
|---|---|
| Aplomado Falcon | Falco femoralis |
| Aquatic Warbler | Acrocephalus paludicola |
| Arctic Redpoll | Acanthis hornemanni |
| Arctic Tern | Sterna paradisaea |
| Arctic Warbler | Phylloscopus borealis |
| Arizona Woodpecker | Picoides arizonae |
| Armenian Gull | Larus armenicus |
| Arrowhead Warbler | Setophaga pharetra |
| Ash-throated Flycatcher | Myiarchus cinerascens |
| Ashy Storm-Petrel | Oceanodroma homochroa |
| Ashy-faced Owl | Tyto glaucops |
| Ashy-headed Goose | Chloephaga poliocephala |
| Ashy-throated Chlorospingus | Chlorospingus canigularis |
| Asian Brown Flycatcher | Muscicapa dauurica |
| Asian Desert Warbler | Sylvia nana |
| Asian Rosy-Finch | Leucosticte arctoa |
| Atitlan Grebe | Podilymbus gigas |
| Atlantic Canary | Serinus canaria |
| Atlantic Puffin | Fratercula arctica |
| Audouin's Gull | Ichthyaetus audouinii |
| Audubon's Oriole | Icterus graduacauda |
| Audubon's Shearwater | Puffinus lherminieri |
| Australian King Parrot | Alisterus scapularis |
| Australian Magpie | Gymnorhina tibicen |
| Australian Ringneck | Barnardius zonarius |
RingBase adheres to EURING codes.
