Heermann's Gull vs Peruvian Tern
Larus heermanni compared with Sternula lorata
Side-by-Side Comparison
| Attribute | Heermann's Gull | Peruvian Tern |
|---|---|---|
| Scientific Name | Larus heermanni | Sternula lorata |
| Order | Charadriiformes | Charadriiformes |
| Family | Laridae | Laridae |
| Conservation Status | Near Threatened | Endangered |
| Length | — | — |
| Wingspan | 67.2 cm (26.5 in) | 34.7 cm (13.7 in) |
| Weight | 448.26666666666665 g (15.81 oz) | 52.0 g (1.83 oz) |
| Diet | -- | -- |
| Clutch Size | 1-2 | 1-2 |
| Population Trend | — | — |
Habitat Comparison
Conservation Status
Near Threatened
Heermann's Gull
Endangered
Peruvian 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.
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.