Least Storm-petrel vs Wedge-rumped Storm-petrel
Hydrobates microsoma compared with Hydrobates tethys
Side-by-Side Comparison
| Attribute | Least Storm-petrel | Wedge-rumped Storm-petrel |
|---|---|---|
| Scientific Name | Hydrobates microsoma | Hydrobates tethys |
| Order | Procellariiformes | Procellariiformes |
| Family | Hydrobatidae | Hydrobatidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 23.8 cm (9.4 in) | 26.0 cm (10.2 in) |
| Weight | 18.0 g (0.63 oz) | 27.0 g (0.95 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Least Storm-petrel
Least Concern
Wedge-rumped Storm-petrel
About These Birds
Least Storm-petrel
World's smallest seabird at 13–15 cm. Sooty-black with white rump; short rounded wings. Breeds Baja California islands; ranges offshore in eastern Pacific to Ecuador. Feeds on zooplankton and small fish by pattering on the surface. Nocturnal at breeding colonies; Near Threatened.
Wedge-rumped Storm-petrel
Wedge-rumped Storm-petrel, 19–21 cm, breeds in enormous colonies in the Galápagos and on islands off Peru. The largest white rump patch of any storm-petrel — nearly triangular, extending to the uppertail coverts. Unlike most storm-petrels, daytime activity at colonies. Planktivore in eastern Pacific upwelling.