Ainley's Storm-petrel vs Tristram's Storm-petrel
Hydrobates cheimomnestes से तुलना Hydrobates tristrami
Side-by-Side Comparison
| विशेषता | Ainley's Storm-petrel | Tristram's Storm-petrel |
|---|---|---|
| वैज्ञानिक नाम | Hydrobates cheimomnestes | Hydrobates tristrami |
| गण | Procellariiformes | Procellariiformes |
| कुल | Hydrobatidae | Hydrobatidae |
| संरक्षण स्थिति | Vulnerable | Least Concern |
| लंबाई | — | — |
| पंखों का फैलाव | 30.1 cm (11.9 in) | 35.5 cm (14.0 in) |
| वजन | 41.15 g (1.45 oz) | 89.0 g (3.14 oz) |
| आहार | -- | -- |
| अंडों की संख्या | 1 | 1 |
| Population Trend | — | — |
संरक्षण स्थिति
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.