Heermann's Gull vs Large-billed Tern
Larus heermanni verglichen mit Phaetusa simplex
Side-by-Side Comparison
| Merkmal | Heermann's Gull | Large-billed Tern |
|---|---|---|
| Wissenschaftlicher Name | Larus heermanni | Phaetusa simplex |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Near Threatened | Least Concern |
| Länge | — | — |
| Flügelspannweite | 67,2 cm (26.5 in) | 58,3 cm (23.0 in) |
| Gewicht | 448,26666666666665 g (15.81 oz) | 241,5 g (8.52 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1-2 | 2-3 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Near Threatened
Heermann's Gull
Least Concern
Large-billed 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.
Large-billed Tern
Large-billed Tern, 36–38 cm, is a distinctive South American freshwater tern of major river systems including the Amazon, Paraná, and Orinoco. Bold black and white plumage with a massive yellow bill and yellow feet. Piscivore; plunge-dives from height into rivers. Resident in tropical lowlands.