Heermann's Gull vs Bridled Tern
Larus heermanni verglichen mit Onychoprion anaethetus
Side-by-Side Comparison
| Merkmal | Heermann's Gull | Bridled Tern |
|---|---|---|
| Wissenschaftlicher Name | Larus heermanni | Onychoprion anaethetus |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Near Threatened | Least Concern |
| Länge | — | — |
| Flügelspannweite | 67,2 cm (26.5 in) | 54,7 cm (21.5 in) |
| Gewicht | 448,26666666666665 g (15.81 oz) | 129,13333333333333 g (4.56 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1-2 | 1 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Near Threatened
Heermann's Gull
Least Concern
Bridled 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.
Bridled Tern
Bridled Tern, 30–32 cm, breeds on tropical islands across the Indo-Pacific and Atlantic. Dark brownish-black above with a white forehead stripe extending behind the eye — the diagnostic 'bridle'. Pelagic outside breeding; piscivore, takes fish and squid at the surface.