| Common Name | Scientific name |
|---|---|
| Blue-black Grosbeak | Cyanocompsa cyanoides |
| Blue-black Grassquit | Volatinia jacarina |
| Blue-and-yellow Macaw | Ara ararauna |
| Blue-and-white Swallow | Pygochelidon cyanoleuca |
| Blue-and-white Mockingbird | Melanotis hypoleucus |
| Blue-and-gold Tanager | Bangsia arcaei |
| Blue Seedeater | Amaurospiza concolor |
| Blue Rock-Thrush | Monticola solitarius |
| Blue Mountain Vireo | Vireo osburni |
| Blue Mockingbird | Melanotis caerulescens |
| Blue Magpie | Urocissa erythroryncha |
| Blue Jay | Cyanocitta cristata |
| Blue Ground-Dove | Claravis pretiosa |
| Blue Grosbeak | Passerina caerulea |
| Blue Dacnis | Dacnis cayana |
| Blue Cotinga | Cotinga nattererii |
| Blue Bunting | Cyanocompsa parellina |
| Blacksmith Lapwing | Vanellus armatus |
| Blackpoll Warbler | Setophaga striata |
| Blackcap | Sylvia atricapilla |
| Blackburnian Warbler | Setophaga fusca |
| Black-winged Stilt | Himantopus himantopus |
| Black-winged Pratincole | Glareola nordmanni |
| Black-winged Petrel | Pterodroma nigripennis |
| Black-winged Kite | Elanus caeruleus |
RingBase adheres to EURING codes.
