Band-rumped Storm-petrel vs Ainley's Storm-petrel
Hydrobates castro compared with Hydrobates cheimomnestes
Side-by-Side Comparison
| Attribute | Band-rumped Storm-petrel | Ainley's Storm-petrel |
|---|---|---|
| Scientific Name | Hydrobates castro | Hydrobates cheimomnestes |
| Order | Procellariiformes | Procellariiformes |
| Family | Hydrobatidae | Hydrobatidae |
| Conservation Status | Least Concern | Vulnerable |
| Length | — | — |
| Wingspan | 30.1 cm (11.9 in) | 30.1 cm (11.9 in) |
| Weight | 49.25 g (1.74 oz) | 41.15 g (1.45 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Conservation Status
Least Concern
Band-rumped Storm-petrel
Vulnerable
Ainley's Storm-petrel
About These Birds
Band-rumped Storm-petrel
Band-rumped Storm-petrel, 19–21 cm, breeds on Atlantic and Pacific volcanic islands including the Azores, Canaries, and Galápagos. Sooty brown with a white rump band; similar to Leach's but straighter wingtips and steadier flight. Multiple cryptic species may be involved. Planktivore; widespread pelagic.
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.