Least Storm-petrel vs Tristram's Storm-petrel
Hydrobates microsoma compared with Hydrobates tristrami
Side-by-Side Comparison
| Attribute | Least Storm-petrel | Tristram's Storm-petrel |
|---|---|---|
| Scientific Name | Hydrobates microsoma | Hydrobates tristrami |
| Order | Procellariiformes | Procellariiformes |
| Family | Hydrobatidae | Hydrobatidae |
| Conservation Status | Least Concern | Least Concern |
| Length | — | — |
| Wingspan | 23.8 cm (9.4 in) | 35.5 cm (14.0 in) |
| Weight | 18.0 g (0.63 oz) | 89.0 g (3.14 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Least Storm-petrel
Least Concern
Tristram'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.
Tristram's Storm-petrel
Tristram's Storm-petrel, 24–25 cm, is one of the largest storm-petrels, breeding on small Hawaiian and Ogasawara Islands in the North Pacific. All dark; broad wings, moderate tail fork. Nocturnal at colonies in winter (October–April). Planktivore; poorly known at sea; winters south into tropical Pacific.