Charles Ellicott Commentary Job 39:26

"Is it by thy wisdom that the hawk soareth, (And) stretcheth her wings toward the south?" — Job 39:26 (ASV)

Does the hawk fly? —The more symmetrical order of these descriptions would be for the ostrich to come after the war-horse and before the hawk; in that case, there would have been a gradual transition from the swiftest of quadrupeds to the swiftest of birds by means of the ostrich, which, though winged like a bird, cannot use its wings as birds do, but can only run on the ground like a quadruped.