Ancient Murrelet vs Craveri's Murrelet
Synthliboramphus antiquus ile kıyaslandığında Synthliboramphus craveri
Side-by-Side Comparison
| Özellik | Ancient Murrelet | Craveri's Murrelet |
|---|---|---|
| Bilimsel Ad | Synthliboramphus antiquus | Synthliboramphus craveri |
| Takım | Charadriiformes | Charadriiformes |
| Familya | Alcidae | Alcidae |
| Koruma Durumu | Least Concern | Vulnerable |
| Uzunluk | — | — |
| Kanat Açıklığı | 27,1 cm (10.7 in) | 23,9 cm (9.4 in) |
| Ağırlık | 208,16666666666666 g (7.34 oz) | 150,5 g (5.31 oz) |
| Beslenme | -- | -- |
| Kuluçka Büyüklüğü | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
Koruma Durumu
Least Concern
Ancient Murrelet
Vulnerable
Craveri's Murrelet
About These Birds
Ancient Murrelet
Ancient Murrelet, 24–27 cm, breeds in burrows on North Pacific islands from British Columbia to Japan. Black hood, grey back, white underparts with yellow bill. Nocturnal at colonies to avoid predators. Chicks lead-march to sea within days of hatching — abandoning the nest very early. Planktivore and piscivore.
Craveri's Murrelet
Craveri's Murrelet, 21–23 cm, breeds on Gulf of California islands, dispersing into the Pacific after breeding. Darkest Synthliboramphus murrelet; less white on face than Scripps's. Near Threatened; small population threatened by introduced predators on nesting islands and bycatch in gill nets.