Fowl in Wikipedia

Fowl. - This word which, in its most general sense, applies to anything that flies in the air (Genesis 1:20, 21), and which frequently occurs in the Bible with this meaning, is also sometimes used in a narrower sense, as, for instance, III K., iv, 23, where it stands for all fatted birds that may be reckoned among the delicacies of a king's table; so likewise Gen., xv, 11 and Is., xviii, 6, where it means birds of prey in general. In this latter signification allusions are made to their habit of perching on bare or dead trees, or of flocking together in great numbers.

Read More about Fowl in Wikipedia