The White-throated Magpie-Jay (Calocitta formosa) is a large Central American jay species. It ranges in Pacific-slope thornforest from Jalisco, Mexico to Guanacaste, Costa Rica. Magpie-jays are noisy, gregarious birds, often traveling in easy-to-find flocks, mobbing their observers. White-throated Magpie-Jay hybridizes in Jalisco with Black-throated Magpie-Jay (C. colliei), 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. Wikipedia – http://en.wikipedia.org/wiki/White-throated_Magpie-jay