Measuring 34 cm (13 in) long, this jay is easily recognized from its distinctive facial pattern and yellow eye. The head, face, and chest are mostly black with violet-blue spots above and below the eye, as well as a violet-blue malar stripe. The underparts are white as is the tip of the tail, while the upperparts and wings are mainly dark violet-blue.
- BirdLife International (2012). "Cyanocorax affinis". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013.
- Angehr, George R.; Dean, Robert (2010). The Birds of Panama. Ithaca: Zona Tropical/Comstock/Cornell University Press. p. 280. ISBN 978-0-8014-7674-7.
- Schulenberg, T.S., ed. (2010). "Overview – Black-chested Jay (Cyanocorax affinis)". Neotropical Birds Online. Ithaca, NY, US: Cornell Lab of Ornithology. Retrieved 28 September 2014.
|Wikimedia Commons has media related to Cyanocorax affinis.|
|Wikispecies has information related to: Cyanocorax affinis|
- BirdLife species factsheet for Cyanocorax affinis
- Cyanocorax affinis on Avibase
- Black-chested jay videos, photos, and sounds at the Internet Bird Collection
- Black-chested jay photo gallery at VIREO (Drexel University)
- Interactive range map of Cyanocorax affinis at IUCN Red List maps
- Audio recordings of Black-chested jay on Xeno-canto.
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