My ignorance? Dictionary.com defines "fowl" as "1. the domestic or barnyard hen or rooster; chicken. Compare domestic fowl. 2. any of several other, usually gallinaceous, birds that are barnyard, domesticated, or wild, as the duck, turkey, or pheasant. 3. (in market and household use) a full-grown domestic fowl for food purposes, as distinguished from a chicken or young fowl. 4. the flesh or meat of a domestic fowl. 5. any bird (used chiefly in combination): waterfowl; wildfowl."
The American Heritage Dictionary defines it as "Any of various birds of the order Galliformes, especially the common, widely domesticated chicken (Gallus gallus).
A bird, such as the duck, goose, turkey, or pheasant, that is used as food or hunted as game. The flesh of such birds used as food. A bird of any kind."
Now, where are you getting your definition fromthat "fowl" means "a whole group of flying creatures?" The Hebrew word "ofe" means birds or insects! No mammals. Moses thought bats were birds!. The Septuagint (LXX) uses the word peteinon (peteinon) which has a broader meaning than the Hebrew word "ofe" (i.e. any winged creature). However EVERY English Bible translates "ofe" as bird or fowl. KJV, "bird" nine times, "fowl" 5; NAS "bird" 14 times.
I submit that you are making up your own definitions. Some are willing to use anything, any means, to show that biblical authors simply could not make a mistake.