Heermann's Gull vs Fairy Tern
Larus heermanni เปรียบเทียบกับ Sternula nereis
Side-by-Side Comparison
| คุณสมบัติ | Heermann's Gull | Fairy Tern |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Larus heermanni | Sternula nereis |
| อันดับ | Charadriiformes | Charadriiformes |
| วงศ์ตระกูล | Laridae | Laridae |
| สถานะการอนุรักษ์ | Near Threatened | Vulnerable |
| ความยาว | — | — |
| กว้างปีก | 67.2 cm (26.5 in) | 35.6 cm (14.0 in) |
| น้ำหนัก | 448.26666666666665 g (15.81 oz) | 68.5 g (2.42 oz) |
| อาหาร | -- | -- |
| จำนวนไข่ | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
สถานะการอนุรักษ์
Near Threatened
Heermann's Gull
Vulnerable
Fairy Tern
About These Birds
Heermann's Gull
Heermann's Gull, 46–51 cm, is distinctive — dark grey body, white head (breeding), red bill. Breeds almost entirely on Isla Rasa in the Gulf of California, then disperses north along the Pacific coast to British Columbia. Kleptoparasite; steals fish from Brown Pelicans. Near Threatened; range highly restricted.
Fairy Tern
Fairy Tern, 22–25 cm, breeds in southern Australia, New Zealand, and New Caledonia on sandy beaches. White and pale grey with an orange-yellow bill; delicate and buoyant in flight. Piscivore; hovers and plunge-dives in shallow coastal and estuarine waters. Vulnerable due to beach disturbance.