Family Northern Storm-petrels (Hydrobatidae)

Critically Endangered (Possibly Extinct)

Guadalupe Storm-petrel (Hydrobates macrodactylus)


French: Océanite de Guadalupe German: Guadalupesturmschwalbe Spanish: Paíño de la Guadalupe

Oceanodroma leucorhoa macrodactyla

W. E. Bryant

, 1887,

Guadalupe Island, Baja California, Mexico


Probably related to the species that may be separated in genus Cymochorea (see H. leucorhous). Monotypic.


Guadalupe I, off NW Mexico. Possibly extinct#R.

Descriptive notes

22·5–24 cm; wingspan 50·5–52 cm. Medium-large, fork-tailed and white-rumped storm-petrel. Blackish-brown upperparts with paler grey wingbar (principally on greater coverts,... read more




Marine, but degree of pelagic behaviour unknown; nested on ground within forest, c. 800 m above sea... read more

Food and feeding

Nothing known.


Few details known, but eggs laid Mar to Jun; chicks reported as late as Aug. Nested in burrows lined with leaves and pine needles, under... read more


At-sea distribution completely unknown.

Status and conservation

CRITICALLY ENDANGERED (POSSIBLY EXTINCT). Population estimated at no more than 50 individuals; may persist on Guadalupe, off Mexico, 280 km W of Baja California. The species... read more

Recommended citation

del Hoyo, J., Collar, N., Kirwan, G.M. & Sharpe, C.J. (2019). Guadalupe Storm-petrel (Hydrobates macrodactylus). 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 24 August 2019).