Atlantic White Tern vs Red-legged Kittiwake
Gygis alba مقارنةً بـ Rissa brevirostris
Side-by-Side Comparison
| السمة | Atlantic White Tern | Red-legged Kittiwake |
|---|---|---|
| الاسم العلمي | Gygis alba | Rissa brevirostris |
| الرتبة | Charadriiformes | Charadriiformes |
| الفصيلة | Laridae | Laridae |
| حالة الحفاظ | Least Concern | Vulnerable |
| الطول | — | — |
| طول الجناح | 50,4 cm (19.8 in) | 60,0 cm (23.6 in) |
| الوزن | 138,0 g (4.87 oz) | 401,6666666666667 g (14.17 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1-3 |
| Population Trend | — | — |
Habitat Comparison
حالة الحفاظ
Least Concern
Atlantic White Tern
Vulnerable
Red-legged Kittiwake
About These Birds
Atlantic White Tern
Atlantic White Tern: 28–33 cm, wingspan 76–87 cm, ethereally white seabird with blue-grey bill, blue orbital ring, and large dark eyes. Breeds on tropical Atlantic islands including Ascension and Saint Helena; related species widespread across the Indo-Pacific. Nests on bare branches with no nest material. Feeds on small fish near the surface.
Red-legged Kittiwake
Red-legged Kittiwake, 35–39 cm, has a very restricted range on only four Aleutian and Pribilof Island colonies, with a world population under 200,000. Resembles Black-legged Kittiwake but with bright red legs, darker upperparts, and white underwing tips. Pelagic piscivore; Vulnerable and declining.