Ainley's Storm-petrel vs Wedge-rumped Storm-petrel
Hydrobates cheimomnestes verglichen mit Hydrobates tethys
Side-by-Side Comparison
| Merkmal | Ainley's Storm-petrel | Wedge-rumped Storm-petrel |
|---|---|---|
| Wissenschaftlicher Name | Hydrobates cheimomnestes | Hydrobates tethys |
| Ordnung | Procellariiformes | Procellariiformes |
| Familie | Hydrobatidae | Hydrobatidae |
| Erhaltungsstatus | Vulnerable | Least Concern |
| Länge | — | — |
| Flügelspannweite | 30,1 cm (11.9 in) | 26,0 cm (10.2 in) |
| Gewicht | 41,15 g (1.45 oz) | 27,0 g (0.95 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1 | 1 |
| Population Trend | — | — |
Erhaltungsstatus
Vulnerable
Ainley's Storm-petrel
Least Concern
Wedge-rumped 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.
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.