Wedge-rumped Storm-Petrel
NameWedge-rumped Storm-Petrel
Common NameWedge-rumped Storm-Petrel
Scientific NameHydrobates tethys
FamilyHydrobatidae
Wingspan (cm)35.5
Length (cm)19
Weight (g)25
Plumage DetailsEntirely sooty-brown to blackish plumage, except for a conspicuous white rump. The tail is deeply forked.
Vocalization / CallGenerally silent at sea, but at breeding colonies, they produce soft, purring, churring, or twittering calls.
Primary Dietcarnivore
Primary Habitatscoastal
Conservation Statusleast-concern
Geographic RangeBreeds on islands in the eastern Pacific Ocean, primarily the Galápagos Islands and islands off the coast of Peru. Disperses widely over the eastern Pacific after breeding.
Identifying Featuressmall size, dark plumage, white rump patch, deeply forked tail, erratic, butterfly-like flight
Description
A small, dark-bodied seabird with a distinctive white rump and a deeply forked tail. It exhibits an erratic, butterfly-like flight pattern over open ocean waters, often pattering its feet on the surface while feeding.
