The Least Storm-Petrel (Hydrobates microsoma) is a species of bird (Aves) in the family Hydrobatidae (Northern Storm-Petrels) and order Procellariiformes (Tube-nosed Swimmers).
Hydrobates cheimomnestes
Hydrobates homochroa
Hydrobates castro
Hydrobates melania
Hydrobates jabejabe
Hydrobates pelagicus
Hydrobates furcatus
Hydrobates macrodactylus
Hydrobates leucorhous
Hydrobates microsoma
Hydrobates markhami
Hydrobates matsudairae
Hydrobates monteiroi
Hydrobates hornbyi
Hydrobates monorhis
Hydrobates socorroensis
Hydrobates tristrami
Hydrobates tethys