| Common Name | Scientific name |
|---|---|
| Baird's Sandpiper | Calidris bairdii |
| Baird's Junco | Junco bairdi |
| Baillon's Crake | Porzana pusilla |
| Baikal Teal | Anas formosa |
| Baikal Teal | Sibirionetta formosa |
| Bahama Yellowthroat | Geothlypis rostrata |
| Bahama Woodstar | Calliphlox evelynae |
| Bahama Warbler | Setophaga flavescens |
| Bahama Swallow | Tachycineta cyaneoviridis |
| Bahama Oriole | Icterus northropi |
| Bahama Mockingbird | Mimus gundlachii |
| Baglafecht Weaver | Ploceus baglafecht |
| Baer's Pochard | Aythya baeri |
| Bachman's Warbler | Vermivora bachmanii |
| Bachman's Sparrow | Peucaea aestivalis |
| Azure-rumped Tanager | Tangara cabanisi |
| Azure-hooded Jay | Cyanolyca cucullata |
| Azure-crowned Hummingbird | Amazilia cyanocephala |
| Azure Tit | Cyanistes cyanus |
| Azure Gallinule | Porphyrio flavirostris |
| Aztec Thrush | Ridgwayia pinicola |
| Aztec Rail | Rallus tenuirostris |
| Avocado | Persea americana |
| Australian Shoveler | Anas rhynchotis |
| Australian Shelduck | Tadorna tadornoides |
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