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Side-by-Side Comparison

Attribute	New Zealand Storm-petrel	Grey-backed Storm-petrel
Scientific Name	Fregetta maoriana	Garrodia nereis
Order	Procellariiformes	Procellariiformes
Family	Oceanitidae	Oceanitidae
Conservation Status	Critically Endangered	Least Concern
Length	—	—
Wingspan	28.2 cm (11.1 in)	25.0 cm (9.8 in)
Weight	34.75 g (1.23 oz)	32.5 g (1.15 oz)
Diet	--	--
Clutch Size	1	1
Population Trend	—	—

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Habitat Comparison

Shared Habitats

None

New Zealand Storm-petrel only

🌲 Forest

Grey-backed Storm-petrel only

🌾 Grassland

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Conservation Status

Critically Endangered

New Zealand Storm-petrel

Least Concern

Grey-backed Storm-petrel

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About These Birds

New Zealand Storm-petrel

New Zealand Storm-petrel, 16–18 cm, was thought extinct for over 150 years until rediscovered in 2003 off the Hauraki Gulf. Breeding colony finally found in 2013 on Little Barrier Island. Dark above, white below with black stripe through belly. Endangered. Planktivore in New Zealand coastal and pelagic waters.

Grey-backed Storm-petrel

Grey-backed Storm-petrel, 16–19 cm, breeds on sub-Antarctic islands across the Southern Ocean from Tristan da Cunha to the Antipodes. Pale grey back and rump distinguishes it from most other storm-petrels. Planktivore; flutters low over the sea surface picking up zooplankton.

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More Birds to Explore

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Black-bellied Storm-petrel Fregetta tropica New Caledonian Storm-petrel Fregetta lineata Pincoya Storm-petrel Oceanites pincoyae Polynesian Storm-petrel Nesofregetta fuliginosa All Oceanitidae birds →

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