Black-chested Jay
Cyanocorax affinis
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. It does not exhibit sexual dimorphism.
ID text from Wikipedia, CC BY-SA 4.0
White-throated Magpie-Jay
Cyanocorax formosus
The white-throated magpie-jay is between 43 and 56 cm (17–22 in) in length and weighs 205 to 213 g (7.2–7.5 oz). The species has a particularly long tail and a slightly curved crest of feathers on the head. The crest is black in the nominate race, but has blue or white margins on the other two subspecies. The nominate race has a white face with a black crown and margin to the face, forming a narrow band around the throat, as well as a small drop below the eye. The black is less extensive in the other subspecies.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Black-chested Jay and White-throated Magpie-Jay.