Hutton's Shearwater vs Balearic Shearwater

Puffinus huttoni compared with Puffinus mauretanicus

Side-by-Side Comparison

Attribute Hutton's Shearwater Balearic Shearwater
Scientific Name Puffinus huttoni Puffinus mauretanicus
Order Procellariiformes Procellariiformes
Family Procellariidae Procellariidae
Conservation Status Endangered Critically Endangered
Length
Wingspan 41.8 cm (16.5 in) 48.4 cm (19.1 in)
Weight 345.4166666666667 g (12.18 oz) 514.8 g (18.16 oz)
Diet -- --
Clutch Size 1 1
Population Trend

Habitat Comparison

Shared Habitats

None

Hutton's Shearwater only

Balearic Shearwater only

Conservation Status

Endangered

Hutton's Shearwater

Critically Endangered

Balearic Shearwater

About These Birds

Hutton's Shearwater

38 cm. Dark above; white below; larger than Fluttering Shearwater. Breeds only in alpine zone of Kaikoura Ranges, South Island, New Zealand. Endangered; very restricted inland breeding range unique among shearwaters; feeds at sea in Tasman Sea and off south Australia.

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.

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