Great Shearwater vs Pycroft's Petrel
Ardenna gravis ile kıyaslandığında Pterodroma pycrofti
Side-by-Side Comparison
| Özellik | Great Shearwater | Pycroft's Petrel |
|---|---|---|
| Bilimsel Ad | Ardenna gravis | Pterodroma pycrofti |
| Takım | Procellariiformes | Procellariiformes |
| Familya | Procellariidae | Procellariidae |
| Koruma Durumu | Least Concern | Vulnerable |
| Uzunluk | — | — |
| Kanat Açıklığı | 63,6 cm (25.0 in) | 42,8 cm (16.9 in) |
| Ağırlık | 832,5 g (29.37 oz) | 156,5 g (5.52 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Ortak Yaşam Alanları
Hiçbiri
Great Shearwater only
Pycroft's Petrel only
Koruma Durumu
Least Concern
Great Shearwater
Vulnerable
Pycroft's 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.
Pycroft's Petrel
26–28 cm. Small; pale grey above with dark M-mark; white underparts with partial dark collar. Breeds small islands off northern New Zealand (Poor Knights, Hen & Chickens). Vulnerable; migrates to North Pacific. Feeds on squid and fish; nocturnal at colonies; threatened by rats.