Black-tailed Gull vs Peruvian Tern
Larus crassirostris compared with Sternula lorata
Side-by-Side Comparison
| Attribute | Black-tailed Gull | Peruvian Tern |
|---|---|---|
| Scientific Name | Larus crassirostris | Sternula lorata |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Least Concern | Endangered |
| Length | — | — |
| Wingspan | 72.8 cm (28.7 in) | 34.7 cm (13.7 in) |
| Weight | 675.0 g (23.81 oz) | 52.0 g (1.83 oz) |
| Diet | -- | -- |
| Clutch Size | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Least Concern
Black-tailed Gull
Endangered
Peruvian Tern
About These Birds
Black-tailed Gull
Black-tailed Gull, 44–48 cm, is common on East Asian coasts from Russia to China, Japan, and Korea. Grey mantle, white body, yellow bill with red spot and black subterminal band, yellow legs. Omnivore; very vocal, known as the 'cat gull' for its mewing calls. Migratory; winters south to Vietnam.
Peruvian Tern
Peruvian Tern, 23–25 cm, is an Endangered tern restricted to the Humboldt Current coastline of Peru and northern Chile. White forehead, yellow bill, grey above. Breeds on barren coastal deserts and fishmeal industry areas. Severely threatened by habitat disturbance and introduced predators.