Cassin's Auklet vs Ancient Murrelet
Ptychoramphus aleuticus مقارنةً بـ Synthliboramphus antiquus
Side-by-Side Comparison
| السمة | Cassin's Auklet | Ancient Murrelet |
|---|---|---|
| الاسم العلمي | Ptychoramphus aleuticus | Synthliboramphus antiquus |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Alcidae | Alcidae |
| حالة الحفاظ | Near Threatened | Least Concern |
| الطول | — | — |
| طول الجناح | 24,2 cm (9.5 in) | 27,1 cm (10.7 in) |
| الوزن | 175,0 g (6.17 oz) | 208,16666666666666 g (7.34 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 2 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Near Threatened
Cassin's Auklet
Least Concern
Ancient Murrelet
About These Birds
Cassin's Auklet
Cassin's Auklet, 21–23 cm, is a small, almost entirely dark grey auklet breeding in burrows on rocky North Pacific islands from Baja California to the Aleutians. Feeds almost exclusively on zooplankton — euphausiids and copepods — at night. Highly colonial; winters near shore.
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.