Black-bellied Storm-petrel vs Polynesian Storm-petrel
Fregetta tropica compared with Nesofregetta fuliginosa
Side-by-Side Comparison
| Attribute | Black-bellied Storm-petrel | Polynesian Storm-petrel |
|---|---|---|
| Scientific Name | Fregetta tropica | Nesofregetta fuliginosa |
| Order | Procellariiformes | Procellariiformes |
| Family | Oceanitidae | Oceanitidae |
| Conservation Status | Least Concern | Endangered |
| Length | — | — |
| Wingspan | 32.9 cm (13.0 in) | 39.5 cm (15.6 in) |
| Weight | 53.0 g (1.87 oz) | 71.0 g (2.50 oz) |
| Diet | -- | -- |
| Clutch Size | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Black-bellied Storm-petrel
Endangered
Polynesian Storm-petrel
About These Birds
Black-bellied Storm-petrel
Black-bellied Storm-petrel, 19–21 cm, breeds on sub-Antarctic islands and disperses widely across the Southern Ocean. Dark above with white rump; distinctive black streak through the white belly. Patters over wave surfaces picking up plankton. Long-distance pelagic movements after breeding.
Polynesian Storm-petrel
Polynesian Storm-petrel, 25–26 cm, is the largest storm-petrel, breeding on tropical Pacific islands from the Marquesas to the Cook Islands. Two morphs: dark and white-bellied. Flies with distinctive high bounding style. Vulnerable; predated by introduced rats and cats on nesting islands. Planktivore.