- Sporophila atrirostris
Oryzoborus atrirostris
Identification
15–16·5 cm (6-6½ in)
- Long tail
- Large, black bill
Male:
- Black overall plumage
- White on speculum and underwing coverts
Female:
- Upperside brown
- Underside with a slight reddish-yellow tint to the brown
Distribution
South America: found on the eastern slope of the Andes in Ecuador Peru and Bolivia and also possibly in the extreme south-western edge of Colombia on the border with Ecuador.
Taxonomy
Formerly placed in genus Oryzoborus.
This taxon is considered a subspecies of Great-billed Seed-Finch by some authorities[2]
Subspecies
There are 2 subspecies:[1]
- S. a. atrirostris:
- Eastern slope of Andes of northern Peru (Loreto and San Martín)
- S. a. gigantirostris:
- Northern Bolivia (Beni)
Habitat
Damp grassy areas in marshy country. Rivers and lakes lined with reeds, sedges and shrubs; also riparian forest and regenerating clearings. Found at heights up to 600 m.
Rare and local in the lowlands.
Behaviour
Diet
Very little is know, but they presumably eat seeds.
Gallery
Click on photo for larger image
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Avibase
- Handbook of the Birds of the World Alive (retrieved November 2015)
- Restall et al. 2006. Birds of Northern South America. Yale University Press. ISBN 9780300124156
- Ridgely and Tudor 2009. Field guide to the songbirds of South America - The Passerines. University of Texas Press. ISBN 978-0-292-71979-8
Recommended Citation
- BirdForum Opus contributors. (2025) Black-billed Seed Finch. In: BirdForum, the forum for wild birds and birding. Retrieved 26 April 2025 from https://www.birdforum.net/opus/Black-billed_Seed_Finch
External Links
GSearch checked for 2020 platform.
