Hartlaub's Gull vs Aleutian Tern
Larus hartlaubii verglichen mit Onychoprion aleuticus
Side-by-Side Comparison
| Merkmal | Hartlaub's Gull | Aleutian Tern |
|---|---|---|
| Wissenschaftlicher Name | Larus hartlaubii | Onychoprion aleuticus |
| Ordnung | Charadriiformes | Charadriiformes |
| Familie | Laridae | Laridae |
| Erhaltungsstatus | Least Concern | Vulnerable |
| Länge | — | — |
| Flügelspannweite | 54,0 cm (21.3 in) | 52,4 cm (20.6 in) |
| Gewicht | 287,5 g (10.14 oz) | 104,88 g (3.70 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1-5 | 1-4 |
| Population Trend | — | — |
Habitat Comparison
Erhaltungsstatus
Least Concern
Hartlaub's Gull
Vulnerable
Aleutian Tern
About These Birds
Hartlaub's Gull
Hartlaub's Gull, 38–40 cm, is endemic to the Benguela Current coast of Namibia and South Africa. White with grey mantle, dark red bill. Resident; forages on beaches, at harbours, and over cold upwelling waters for fish offal and marine invertebrates. Population stable but range restricted.
Aleutian Tern
Aleutian Tern, 32–34 cm, breeds colonially in Alaska and Russian Far East, wintering in Southeast Asian waters — one of the most poorly tracked migrations among seabirds. Dark grey above, white below, black cap with white forehead. Piscivore; dives for small fish. Near Threatened.