Juan Fernandez Petrel vs Balearic Shearwater
Pterodroma externa مقارنةً بـ Puffinus mauretanicus
Side-by-Side Comparison
| السمة | Juan Fernandez Petrel | Balearic Shearwater |
|---|---|---|
| الاسم العلمي | Pterodroma externa | Puffinus mauretanicus |
| الرتبة | Procellariiformes | Procellariiformes |
| الفصيلة | Procellariidae | Procellariidae |
| حالة الحفاظ | Vulnerable | Critically Endangered |
| الطول | — | — |
| طول الجناح | 58,3 cm (23.0 in) | 48,4 cm (19.1 in) |
| الوزن | 432,5 g (15.26 oz) | 514,8 g (18.16 oz) |
| النظام الغذائي | -- | -- |
| عدد البيض في الوضع | 1 | 1 |
| Population Trend | — | — |
Habitat Comparison
الموائل المشتركة
بلا
Juan Fernandez Petrel only
Balearic Shearwater only
حالة الحفاظ
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.