Black-headed hemispingus 
Black-headed saltator 
Black-headed Tanager 
Black-hooded sierra finch 
Black-throated flowerpiercer 
Black-winged Saltator 
Blue dacnis 
Blue-and-black tanager 
Blue-and-gold tanager 
Blue-and-yellow tanager 
Blue-backed conebill 
Blue-black grassquit 
Blue-browed tanager 
Blue-capped tanager 
Blue-gray tanager 
Blue-necked tanager 
Blue-winged mountain tanager 
Bluish flowerpiercer 
Bluish-gray Saltator 
Brazilian Tanager 
Bright-rumped yellow finch 
Bright-rumped yellow finch 
Buff-bellied tanager 
Buff-breasted mountain tanager