Black-fronted Tern vs Heermann's Gull
Chlidonias albostriatus verglichen mit Larus heermanni
Side-by-Side Comparison
| Merkmal | Black-fronted Tern | Heermann's Gull |
|---|---|---|
| Wissenschaftlicher Name | Chlidonias albostriatus | Larus heermanni |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Endangered | Near Threatened |
| Länge | — | — |
| Flügelspannweite | 47,9 cm (18.9 in) | 67,2 cm (26.5 in) |
| Gewicht | 93,0 g (3.28 oz) | 448,26666666666665 g (15.81 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Endangered
Black-fronted Tern
Near Threatened
Heermann's Gull
About These Birds
Black-fronted Tern
Black-fronted Tern, 27–30 cm, is Endemic and Near Threatened, breeding on South Island New Zealand river shingle beds. Orange bill, blue-grey body, black cap; juveniles brownish. Piscivore and insectivore; hovers and dips over braided rivers. Winters on nearby North Island and Australian coasts.
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.