The Gray Kingbird is a large flycatcher with a black face mask, gray upperparts and mostly white underparts. They feed on a variety of insects including beetles, bees, and dragonflies.  They hunt by waiting on an exposed perch high in a tree, and then flying out to catch insects in midair.

Gray Kingbird (Tyrannus dominicensis) photographed in the Botanical Gardens, Georgetown. (Photo by Kester Clarke / www.kesterclarke.net)
Gray Kingbird (Tyrannus dominicensis) photographed in the Botanical Gardens, Georgetown. (Photo by Kester Clarke / www.kesterclarke.net)