Being a proponent of a dogmaless society, I cannot give you advice.
The only thought I might have is that the Bible is metaphorical at best. But I suspect that "believers" won't accept that as an answer. [shrug]

Is there good reason for omitting basic facts about the world?

So for a thousand years ( or a very long time) there were birds and creatures of the sea and no animals on the soil of Earth.
I hope that helps a little. Thet truth as I see it.
