Least Storm-petrel vs Townsend's Storm-petrel
Hydrobates microsoma compared with Hydrobates socorroensis
Side-by-Side Comparison
| Attribute | Least Storm-petrel | Townsend's Storm-petrel |
|---|---|---|
| Scientific Name | Hydrobates microsoma | Hydrobates socorroensis |
| Order | Procellariiformes | Procellariiformes |
| Family | Hydrobatidae | Hydrobatidae |
| Conservation Status | Least Concern | Endangered |
| Length | — | — |
| Wingspan | 23.8 cm (9.4 in) | 30.1 cm (11.9 in) |
| Weight | 18.0 g (0.63 oz) | 33.2 g (1.17 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Least Storm-petrel
Endangered
Townsend's 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.
Townsend's Storm-petrel
Townsend's Storm-petrel, 19–21 cm, breeds on Guadalupe and San Benedicto Islands off western Mexico. Recently split from Leach's Storm-petrel. Forked white rump, dark overall. Pelagic in eastern Pacific; planktivore. Conservation status uncertain; threatened by introduced predators at small nesting island colonies.