Juan Fernandez Petrel vs Balearic Shearwater
Pterodroma externa verglichen mit Puffinus mauretanicus
Side-by-Side Comparison
| Merkmal | Juan Fernandez Petrel | Balearic Shearwater |
|---|---|---|
| Wissenschaftlicher Name | Pterodroma externa | Puffinus mauretanicus |
| Ordnung | Procellariiformes | Procellariiformes |
| Familie | Procellariidae | Procellariidae |
| Erhaltungsstatus | Vulnerable | Critically Endangered |
| Länge | — | — |
| Flügelspannweite | 58,3 cm (23.0 in) | 48,4 cm (19.1 in) |
| Gewicht | 432,5 g (15.26 oz) | 514,8 g (18.16 oz) |
| Ernährung | -- | -- |
| Gelegegröße | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
Gemeinsame Lebensräume
-
Juan Fernandez Petrel only
Balearic Shearwater only
Erhaltungsstatus
Vulnerable
Juan Fernandez Petrel
Critically Endangered
Balearic Shearwater
About These Birds
Juan Fernandez Petrel
43 cm, wingspan 97 cm. Large; dark grey-brown above with white nape and underparts; dark carpal bar and partial collar. Breeds Juan Fernandez Islands (Chile); ranges across subtropical Pacific. Vulnerable due to small breeding range; feeds on fish and squid.
Balearic Shearwater
30–38 cm. Brown above; variably dirty-white to brown below; often shows brown smudging on flanks. Breeds only Balearic Islands, Spain. Critically Endangered with fewer than 3,000 pairs; faces extinction. Migrates to NE Atlantic; threatened by predators, fishing bycatch, and tourist development.