Family Tanagers (Thraupidae)

Vulnerable

Genovesa Ground-finch (Geospiza acutirostris)


Taxonomy

French: Géospize de Genovesa German: Genovesagrundfink Spanish: Pinzón de Darwin de Genovesa picofino
Taxonomy:

Geospiza acutirostris

Ridgway

, 1894,

Genovesa

.

Recent molecular work has shown that this taxon and G. septentrionalis, both previously treated within G. difficilis (which see), are not sisters to each other or to difficilis, so that each requires species status#R#R. Occasionally hybridizes with G. propinqua. Monotypic.

Distribution:

Genovesa, in N Galapagos Is.

Descriptive notes

11–12 cm; 12·3–20 g. A small ground-finch with small, sharply pointed bill distinctly longer than it is deep and with culmen straight, giving more pointed and longer look... read more

Voice

Song a well-spaced series of short low-pitched buzzy “cheeerrrup” notes.

Habitat

Arid lowland areas of dry scrub, as well as areas with prickly pear cactus (Opuntia).

Food and feeding

Forages for arthropods on Croton, Cordia and Bursera trees, while seeds of Bursera, Eragrostis... read more

Breeding

Nestbuilding triggered by onset of rains, and has been documented Jan–Jun. Clutch usually four eggs. Incubation period usually 12 days (... read more

Movements

Presumably sedentary.

Status and conservation

VULNERABLE. Restricted-range species: present in Galápagos Islands EBA. Common within its tiny range (Extent of Occurrence is 19 km²). Global population estimated at fewer... read more

Recommended citation

del Hoyo, J., Collar, N. & Sharpe, C.J. (2020). Genovesa Ground-finch (Geospiza acutirostris). 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 https://www.hbw.com/node/1344177 on 19 February 2020).