Bushy-crested Jay
Cyanocorax melanocyaneus
The adult bushy-crested jay has a length of 28 to 30 cm (11 to 12 in). The tail is long and the central feathers are graduated. The sexes look alike; the head, neck, breast and upper mantle are black while the remaining upper parts are dark blue with a sheen of green or violet. The underparts are plain greenish-blue, the undersides of the wings are grey and the underside of the tail is blackish. The head bears a stubble-like erectile crown of feathers, the beak is black and relatively small, the irises are yellow and the legs black.
ID text from Wikipedia, CC BY-SA 4.0
Yucatan Jay
Cyanocorax yucatanicus
The adult Yucatan jay has a black head, nape, and underparts. The back, wings, and tail are a sharp blue colour. It has black irises, black eye rings, a black beak, and yellow legs and feet. There is no difference between the sexes. The Yucatan jay is visually unique within its range, with no similar species. Outside of its range, it is similar to the San Blas jay, the purplish-backed jay, and the bushy-crested jay. All three have a yellow iris whereas the Yucatan jay has a black iris, and are a brighter shade of blue on their upperparts.
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: Bushy-crested Jay and Yucatan Jay.