Family Finches (Fringillidae)

Least Concern

Thick-billed Siskin (Spinus crassirostris)


Taxonomy

French: Tarin à bec épais German: Dickschnabelzeisig Spanish: Jilguero piquigrueso
Taxonomy:

Chrysomitris crassirostris

Landbeck

, 1877,

near passes of Uspallata and Portillo, Mendoza, Argentina

.

Races possibly intergrade, although birds from WC Peru (Ancash to Ayacucho), postulated in HBW to represent intermediates, being similar to nominate but with smaller base to lower mandible and breast tinged olive as in race amadoni, also have been suggested to represent an undescribed race#R. Two subspecies recognized.

Subspecies and Distribution
  • S. c. amadoni George, 1964 – Andes of C to SE Peru, extreme N Chile and NW Bolivia.
  • S. c. crassirostris (Landbeck, 1877) – S Bolivia, NW Argentina and C Chile.
  • Descriptive notes

    12·5–14 cm; 19 g. Medium-sized, greenish-yellow finch with large bill, bright yellow wing-flashes and notched tail. Male nominate race has head to upper nape,... read more

    Voice

    Song a series of twitters typical of siskins, but lower-pitched and with more rapid delivery;... read more

    Habitat

    Montane Andean steppes, in Polylepis shrubs and scattered woodland, usually in short or... read more

    Food and feeding

    Almost entirely Polylepis seeds, buds and shoots in breeding season; less well known in non-breeding season (when apparently... read more

    Breeding

    Birds in breeding condition and nest-building in Mar and eggs in late Feb. No further information.

    Movements

    Resident, nomadic and partial migrant. Most movements not well known; some of nominate race move N... read more

    Status and conservation

    Not globally threatened. A poorly known species. Locally common to rare; infrequently recorded.

    Recommended citation

    Clement, P. (2019). Thick-billed Siskin (Spinus crassirostris). 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/61346 on 19 January 2019).