Black-throated mango 
Blue-chested hummingbird 
Blue-chinned sapphire 
Blue-fronted lancebill 
Blue-headed hummingbird 
blue-headed sapphire 
Blue-mantled thornbill 
Blue-tailed emerald 
Blue-throated sapphire 
Blue-throated starfrontlet 
Böhms spinetail 
Bradfields swift 
Broad-billed hummingbird 
Broad-tailed hummingbird 
Bronze-tailed comet 
Bronze-tailed plumeleteer 
Bronzy hermit 
Bronzy inca 
Brown Inca 
Brown Violetear 
Buff-bellied hummingbird 
Buff-tailed coronet 
Buff-tailed Sicklebill 
Buff-thighed puffleg