Aleutian Tern vs Indian Skimmer
Onychoprion aleuticus в сравнении с Rynchops albicollis
Side-by-Side Comparison
| Характеристика | Aleutian Tern | Indian Skimmer |
|---|---|---|
| Научное название | Onychoprion aleuticus | Rynchops albicollis |
| Отряд | Charadriiformes | Charadriiformes |
| Семейство | Laridae | Laridae |
| Охранный статус | Vulnerable | Endangered |
| Длина | — | — |
| Размах крыльев | 52,4 cm (20.6 in) | 74,4 cm (29.3 in) |
| Масса | 104,88 g (3.70 oz) | 164,0 g (5.78 oz) |
| Питание | -- | -- |
| Размер кладки | 1-4 | 2-5 |
| Population Trend | — | — |
Habitat Comparison
Охранный статус
Vulnerable
Aleutian Tern
Endangered
Indian Skimmer
About These Birds
Aleutian Tern
Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.
Indian Skimmer
Indian Skimmer: 38–43 cm, black-and-white skimmer with an orange-and-yellow bill and white collar. Resident on large sandy rivers of the Indian subcontinent. VU. Feeds by skimming river surface with protruding lower mandible to catch fish. Severely threatened by sand-mining, dam building, and human disturbance at nesting colonies.