Family Mockingbirds and Thrashers (Mimidae)

Critically Endangered

Socorro Mockingbird (Mimus graysoni)


French: Moqueur de Socorro German: Socorrospottdrossel Spanish: Sinsonte de Socorro

Harporhynchus graysoni


, 1871,

Socorro Island, Mexico


Previously placed in a monotypic genus Mimodes, but genetic data#R#R indicate that it belongs in Mimus. Monotypic.


Socorro I, in Revillagigedo Archipelago, 600 km W of mainland Mexico.

Descriptive notes

24–26·5 cm; average 75·5g. Large, brownish mockingbird with short, straightish bill, lacking prominent wing and tail markings. Plumage is uniformly... read more


Extended delivery of diverse notes and phrases, similar to song of Mimus polyglottos but... read more


Mixed open woodland and wooded canyons at higher elevations, above 300 m (mostly above 600 m); also... read more

Food and feeding

Omnivorous. Diet includes large insects, young leaves, small fruits (Ficus, Bumelia), also small vertebrates (lizards),... read more


Peak in Mar–May, season possibly Nov–Jul. Apparently monogamous. Territorial, male remains on same territory for more than one... read more



Status and conservation

CRITICALLY ENDANGERED. Restricted-range species: present in Socorro Island EBA. Formerly abundant, up until at least 1958; now greatly reduced. By 1978 numbers had declined... read more

Recommended citation

Cody, M. & Sharpe, C.J. (2018). Socorro Mockingbird (Mimus graysoni). 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 22 October 2018).