Great Shearwater vs Chatham Islands Petrel
Ardenna gravis ile kıyaslandığında Pterodroma axillaris
Side-by-Side Comparison
| Özellik | Great Shearwater | Chatham Islands Petrel |
|---|---|---|
| Bilimsel Ad | Ardenna gravis | Pterodroma axillaris |
| Takım | Procellariiformes | Procellariiformes |
| Familya | Procellariidae | Procellariidae |
| Koruma Durumu | Least Concern | Vulnerable |
| Uzunluk | — | — |
| Kanat Açıklığı | 63,6 cm (25.0 in) | 42,4 cm (16.7 in) |
| Ağırlık | 832,5 g (29.37 oz) | 226,25 g (7.98 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Koruma Durumu
Least Concern
Great Shearwater
Vulnerable
Chatham Islands Petrel
About These Birds
Great Shearwater
43–51 cm, wingspan 105–122 cm. Large; dark brown above with white underparts, dark cap, and distinctive scaly pattern on upperwing. Breeds Tristan da Cunha, Gough, and Falklands; migrates to North Atlantic. Feeds on fish and squid; spectacular post-breeding migration past UK coasts.
Chatham Islands Petrel
30 cm. Small; dark grey above with white forehead and underparts; distinctive black axillaries. Critically Endangered; breeds only South East Island, Chatham Islands (few hundred pairs). Threatened by weka predation; intensive management sustains population. Ranges in temperate Pacific.