White-bellied Storm-petrel vs Grey-backed Storm-petrel
Fregetta grallaria comparado con Garrodia nereis
Side-by-Side Comparison
| Atributo | White-bellied Storm-petrel | Grey-backed Storm-petrel |
|---|---|---|
| Nombre científico | Fregetta grallaria | Garrodia nereis |
| Orden | Procellariiformes | Procellariiformes |
| Familia | Oceanitidae | Oceanitidae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | — | — |
| Envergadura | 33,7 cm (13.3 in) | 25,0 cm (9.8 in) |
| Peso | 53,9 g (1.90 oz) | 32,5 g (1.15 oz) |
| Dieta | -- | -- |
| Tamaño de la puesta | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Hábitats compartidos
White-bellied Storm-petrel only
Ninguno
Grey-backed Storm-petrel only
Ninguno
Estado de conservación
Least Concern
White-bellied Storm-petrel
Least Concern
Grey-backed 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.
Grey-backed Storm-petrel
Grey-backed Storm-petrel, 16–19 cm, breeds on sub-Antarctic islands across the Southern Ocean from Tristan da Cunha to the Antipodes. Pale grey back and rump distinguishes it from most other storm-petrels. Planktivore; flutters low over the sea surface picking up zooplankton.