Booby, Brown, [205]
Red-legged, [204]

borealis, Acanthopneuste, [584]
Phyllopneuste, [584]
Phylloscopus, [584]

boreotis, Sterna, [90], [727]

borneensis, Chibia, [707]

Botaurus, [183]
stellaris, [183]

bournsi, Ceyx, [316], [730]
Loriculus, [289]

Brachypteryginæ, [538]

Brachypteryx, [538]
brunneiceps, [539]
malindangensis, [540]
mindanensis, [540]
poliogyna, [539]

Brachypus cinereifrons, [517]
urostictus, [512]

Brachyurus mulleri, [419]
propinquus, [416]
steerii, [420]