It is endemic to Mexico where its natural habitat is subtropical or tropical dry forests; it is a common species and has been rated as "least concern" by the IUCN.

The sexes are similar; the adult has back, rump, wings and tail blue and the remaining plumage black.

[2][3] The species is social, living in small groups of up to thirty individuals including six to ten breeding pairs.

[4][5] The San Blas jay is omnivorous, the birds feeding both on the ground and in the lower parts of trees.

[5] This bird has been observed taking nestlings from the nest of a ruddy ground dove (Columbina talpacoti).