Ainley's Storm-petrel vs Tristram's Storm-petrel
Hydrobates cheimomnestes comparé à Hydrobates tristrami
Side-by-Side Comparison
| Attribut | Ainley's Storm-petrel | Tristram's Storm-petrel |
|---|---|---|
| Nom scientifique | Hydrobates cheimomnestes | Hydrobates tristrami |
| Ordre | Procellariiformes | Procellariiformes |
| Famille | Hydrobatidae | Hydrobatidae |
| Statut de conservation | Vulnerable | Least Concern |
| Longueur | — | — |
| Envergure | 30,1 cm (11.9 in) | 35,5 cm (14.0 in) |
| Poids | 41,15 g (1.45 oz) | 89,0 g (3.14 oz) |
| Régime alimentaire | -- | -- |
| Taille de la couvée | 1 | 1 |
| Population Trend | — | — |
Statut de conservation
Vulnerable
Ainley's Storm-petrel
Least Concern
Tristram'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.
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.