White-bellied Storm-petrel vs White-vented Storm-petrel
Fregetta grallaria مقارنةً بـ Oceanites gracilis
Side-by-Side Comparison
| السمة | White-bellied Storm-petrel | White-vented Storm-petrel |
|---|---|---|
| الاسم العلمي | Fregetta grallaria | Oceanites gracilis |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Oceanitidae | Oceanitidae |
| حالة الحفاظ | Least Concern | Data Deficient |
| الطول | — | — |
| طول الجناح | 33,7 cm (13.3 in) | 26,7 cm (10.5 in) |
| الوزن | 53,9 g (1.90 oz) | 18,65 g (0.66 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
White-bellied Storm-petrel
Data Deficient
White-vented Storm-petrel
About These Birds
White-bellied Storm-petrel
White-bellied Storm-petrel, 18–21 cm, breeds on sub-Antarctic and South Atlantic islands; pelagic across the Southern Ocean in winter. White belly contrasts with dark breast band and dark upperparts; pale at base of rump. Planktivore; patters over sea surface. Often seen in the company of Wilson's Storm-petrel.
White-vented Storm-petrel
White-vented Storm-petrel, 15–17 cm, is a small, poorly known storm-petrel of the eastern South Pacific. Dark above with white rump and white vent. Pelagic off the coasts of Peru, Chile, and Ecuador; breeding grounds discovered only recently on tiny Patagonian islands. Planktivore.