Galapagos Species Checklist

Geospiza scandens (Gould, 1837)

Pinzón de cactus comun, Common Cactus Finch

Male Common Cactus Finch, in Santa Cruz Island, Galapagos. Photo: CDF Archive.
Male Common Cactus Finch, in Santa Cruz Island, Galapagos. Photo: CDF Archive.

Threats The species is increasingly affected by avian pox, although no evaluation of the impact on population exists. It is also affected by the parasitic fly Philornis downsi, but little data is available.

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Chordata

Class
Aves

Order
Passeriformes

Family
Thraupidae

Genus
Geospiza

Species
scandens

Taxon category: Accepted

Syn.: Geospiza scandens abingdoni (P. L. Sclater & Salvin, 1870); Geospiza scandens intermedia Ridgway, 1894; Geospiza scandens rothschildi Heller & Snodgrass, 1901; Geospiza scandens scandens (Gould, 1837); Cactornis scandens Gould, 1837; Cactornis assimilis Gould, 1837; Cactornis abingdoni (Sclater & Salvin, 1870).

Status

Least concern

Ecology

Preference for an altitude zone in Galapagos: Coastal zone - dry zone

Habitat preferences: Prefers dry shrub and woodlands with large Opuntia populations.

Feeding type: Polyphagous

Flowers and nectar of Opuntia, pollen, seeds and insects

Feeding preferences: Opuntia specialist, exploits flowers, nectar, pollen, seeds, and insects and larvae from rotting pads. Also feeds on other seeds.

Trophic role: Omnivorous

Reproduction mode: Exclusively sexual

Reproductive biology: Male displays in front of a dome shape nest built in an Opuntia cactus pad. Only females incubate (three to five eggs), both feed the chicks. May start breeding slightly earlier than other finches and particularly before the onset of the rain. Always build nests between pads of Opuntia.

Distribution

Distribution map of specimen collection localities or observation records for this species in our collections database.

Distribution: Found on main islands except Fernandina and Pinzón (extinct ??).

References

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