Least Storm-petrel vs Swinhoe's Storm-petrel
Hydrobates microsoma compared with Hydrobates monorhis
Side-by-Side Comparison
| Attribute | Least Storm-petrel | Swinhoe's Storm-petrel |
|---|---|---|
| Scientific Name | Hydrobates microsoma | Hydrobates monorhis |
| Order | Procellariiformes | Procellariiformes |
| Family | Hydrobatidae | Hydrobatidae |
| Conservation Status | Least Concern | Near Threatened |
| Length | — | — |
| Wingspan | 23.8 cm (9.4 in) | 30.5 cm (12.0 in) |
| Weight | 18.0 g (0.63 oz) | 39.55 g (1.40 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Least Storm-petrel
Near Threatened
Swinhoe'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.
Swinhoe's Storm-petrel
Swinhoe's Storm-petrel, 19–20 cm, breeds on small islands off Korea and in the western North Pacific, wintering in the Indian Ocean. Entirely dark sooty brown with a forked tail and white rump largely hidden. Long-distance migrant crossing two oceans. Planktivore; poorly studied due to nocturnal, crevice-nesting habits.