Buff-fronted owl 
Buff-necked Ibis 
Buff-rumped warbler 
Buff-rumped woodpecker 
Buff-sided robin 
Buff-spotted woodpecker 
Buff-streaked chat 
Buff-tailed coronet 
Buff-tailed Sicklebill 
Buff-thighed puffleg 
Buff-throated apalis 
Buff-throated foliage-gleaner 
Buff-throated saltator 
Buff-throated Woodcreeper 
Buff-winged cinclodes 
Buff-winged Starfrontlet 
Bufflehead 
Buffy fish owl 
Buffy helmetcrest 
Buffy Hummingbird 
Buffy pipit 
Buffy-crowned wood partridge 
Bukharan Markhor 
Bulbous dreamer