Family Petrels, Shearwaters (Procellariidae)

Critically Endangered

Beck's Petrel (Pseudobulweria becki)


French: Pétrel de Beck German: Becksturmvogel Spanish: Petrel de Beck

Procellaria becki


, 1928,

lat. 3° S, long. 135° E


Small replica (weight probably only half) of P. rostrata, and found close to latter’s range, indicating complete independence and predicting distinctive breeding vocalizations. Monotypic.


Seas around Bismarck Archipelago and Solomon Is, and also recorded in Vanuatu#R; breeding grounds still not confirmed, but likely to be in montane forests of S New Ireland#R#R.

Descriptive notes

29 cm. Compared to P. rostrata, identical in plumage but 25% smaller (which difference is apparent in the field, especially in side-by-side comparative views),... read more


Voice unknown.


Marine and highly pelagic; breeding areas unknown.

Food and feeding

All recorded observations involve surface-seizing. Diet basically unknown. Has been recorded in association with other feeding seabirds and... read more


Virtually unknown and the species’ breeding grounds have yet to be found. Only information concerns a recently fledged young seen at sea in... read more


Movements not known (especially as breeding grounds remain to be discovered), as is overall at-sea... read more

Status and conservation

CRITICALLY ENDANGERED. Population thought to be declining and recently estimated by BirdLife International at just 50–249 mature individuals; breeding grounds thought to... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2020). Beck's Petrel (Pseudobulweria becki). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 27 February 2020).