Jays are a paraphyletic grouping of passerine birds within the family corvidae. Although the term jay carries no taxonomic weight, most or all of the birds referred to as jays share a few similarities: Any of several noisy, vivacious birds of the crow family, subfamily garrulinae, as the crested garrulus glandarius, of the old world, having brownish plumage with blue, black, and white …