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Genus Calocitta
Black-throated Magpie-Jay - This species is 58.5 to 76.5 cm long, more than half of which is the tail. The upperparts are blue with white tips to the tail feathers; the underparts are white. The bill, legs, head, and conspicuous crest are black except for a pale blue crescent over the eyes and a patch under the eye. In juveniles, the crest has a white tip and the patch below the eye is smaller and darker blue than in adults. In most birds, the throat and chest are also black, but some in the southern part of the range have various amounts of white there.
White-throated Magpie-Jay - White-throated Magpie-Jay hybridizes in Jalisco with Black-throated Magpie-Jay , with which it forms a superspecies. There are three recognised subspecies, the nominate race, which is only found in southern Mexico; C. f. azurea, which is found in south eastern Mexico and western Guatemala, and C. f. pompata, which runs from south eastern Mexico to Costa Rica.