'Flying' in the Bible

Rejoice not thou, Philistia, all of thee, because the rod that smote thee is broken; for out of the serpent's root shall come forth a viper, and his fruit shall be a fiery flying serpent.

The burden of the beasts of the south: Through a land of trouble and anguish, whence come the lioness and lion, the viper and fiery flying serpent, they carry their riches upon the shoulders of asses, and their treasures upon the bunches of camels, to

Who are these that come flying as a cloud, and as doves to their dove-cotes?