God created the great sea monsters and every living creature that moves, which the waters brought forth abundantly, according to their kinds, and every winged bird according to its kind. And God saw that it was good (suitable, admirable) and He approved it. (Genesis 1:21 AMP)
Here is an interesting link to Answers in Genesis about the “beginning of birds.” It is a 5 minute video by David Menton, Ph.D.
From the Answers Weekly