Family Tanagers (Thraupidae)

Least Concern

Sharp-beaked Ground-finch (Geospiza difficilis)


Taxonomy

French: Géospize à bec pointu German: Spitzschnabel-Grundfink Spanish: Pinzón de Darwin picofino
Taxonomy:

Geospiza difficilis

Sharpe

, 1888,

Pinta (formerly Abington Island), Galapagos Islands

.

Relationship to other members of genus has always been troubled (hence the name difficilis). Previously considered conspecific with G. septentrionalis and G. acutirostris, but recent molecular work now confirms comments in HBW that both of those are more closely related to other members of Geospiza and must therefore each be treated as a separate species#R#R. Race debilirostris (Santiago) now considered synonymous with present species, as it is genetically nested between populations of Fernandina and Pinta#R. Monotypic.

Distribution:

Pinta, in N Galapagos Is, and Fernandina and Santiago, in W & C Galapagos Is. Previously recorded on Santa Cruz (last seen between 1932 and 1939), Floreana and San Cristóbal#R.

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... read more

Voice

Song on Wolf I often a long (just over 1 second) single rasping note, reminiscent of song of an... read more

Habitat

In highlands of Fernandina, Santiago and Pinta occupies structurally complex and dense ... read more

Food and feeding

Variety of foods, including leaves, flowers, cactus pulp and insects. In one study on Genovesa I, adults of this species, G.... read more

Breeding

Highland populations breed largely during wet season; on Genovesa season spans Jan–May, beginning soon after first rains; up to five... read more

Movements

Resident; highland populations appear to drift lower into drier habitats during non-breeding season.

Status and conservation

Not globally threatened (Least Concern). Common on N arid low islands, uncommon in highlands. Widespread, and generally showing no signs of any decrease in numbers, although... read more

Recommended citation

Jaramillo, A. (2018). Sharp-beaked Ground-finch (Geospiza difficilis). 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/62172 on 23 June 2018).