Ainley's Storm-petrel vs Swinhoe's Storm-petrel
Hydrobates cheimomnestes verglichen mit Hydrobates monorhis
Side-by-Side Comparison
| Merkmal | Ainley's Storm-petrel | Swinhoe's Storm-petrel |
|---|---|---|
| Wissenschaftlicher Name | Hydrobates cheimomnestes | Hydrobates monorhis |
| Ordnung | Procellariiformes | Procellariiformes |
| Familie | Hydrobatidae | Hydrobatidae |
| Erhaltungsstatus | Vulnerable | Near Threatened |
| Länge | — | — |
| Flügelspannweite | 30,1 cm (11.9 in) | 30,5 cm (12.0 in) |
| Gewicht | 41,15 g (1.45 oz) | 39,55 g (1.40 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1 | 1 |
| Population Trend | — | — |
Erhaltungsstatus
Vulnerable
Ainley's Storm-petrel
Near Threatened
Swinhoe's Storm-petrel
About These Birds
Ainley's Storm-petrel
Ainley's Storm-petrel, 19–21 cm, is a recently described species breeding on the Channel Islands off California, present in winter — unusual among storm-petrels which typically breed in summer. Dark overall, white rump with central grey stripe. Vulnerable; small population and restricted range.
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.