Ancient Murrelet vs Guadalupe Murrelet
Synthliboramphus antiquus 比較対象 Synthliboramphus hypoleucus
Side-by-Side Comparison
| 属性 | Ancient Murrelet | Guadalupe Murrelet |
|---|---|---|
| 学名 | Synthliboramphus antiquus | Synthliboramphus hypoleucus |
| 目 | Charadriiformes | Charadriiformes |
| 科 | Alcidae | Alcidae |
| 保全状況 | Least Concern | Endangered |
| 体長 | — | — |
| 翼開長 | 27.1 cm (10.7 in) | 23.9 cm (9.4 in) |
| 体重 | 208.16666666666666 g (7.34 oz) | 160.5 g (5.66 oz) |
| 食性 | -- | -- |
| 一腹卵数 | 2 | 2 |
| Population Trend | — | — |
Habitat Comparison
保全状況
Least Concern
Ancient Murrelet
Endangered
Guadalupe 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.
Guadalupe Murrelet
Guadalupe Murrelet, 22–24 cm, breeds only on Guadalupe Island off Baja California. Very similar to Scripps's Murrelet but with more extensive white on the face. Critically Endangered; fewer than 1,000 individuals; nesting habitat threatened by feral cats and goats (now being controlled). Piscivore.