Black Tern vs Heermann's Gull
Chlidonias niger से तुलना Larus heermanni
Side-by-Side Comparison
| विशेषता | Black Tern | Heermann's Gull |
|---|---|---|
| वैज्ञानिक नाम | Chlidonias niger | Larus heermanni |
| गण | Charadriiformes | Charadriiformes |
| कुल | Laridae | Laridae |
| संरक्षण स्थिति | Least Concern | Near Threatened |
| लंबाई | — | — |
| पंखों का फैलाव | 40.3 cm (15.9 in) | 67.2 cm (26.5 in) |
| वजन | 73.15 g (2.58 oz) | 448.26666666666665 g (15.81 oz) |
| आहार | -- | -- |
| अंडों की संख्या | 2-3 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
संरक्षण स्थिति
Least Concern
Black Tern
Near Threatened
Heermann's Gull
About These Birds
Black Tern
Black Tern, 22–24 cm, breeds on freshwater marshes of North America and Eurasia. Breeding plumage: sooty black body, grey wings. Insectivore and piscivore; buoyant, dipping flight over wetlands. Migratory; winters off West African coasts and in tropical America. Declining in Europe.
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.