Let's see, you say it's not commonly used for birds, but in Genesis 1:20 it has to be because that fits your view? Any scholars who think that way aren't being very scholarly.
A lot of "scholars" believe in UFOs and bigfoot. Seems being a scholar doesn't prove a whole lot if your scholarship is poor.
No, I'm saying that its standard definition includes birds. It's a broad term for flying creatures, including bats, birds, and flying insects. That is how it is used throughout the Bible.