John Gill Commentary Psalms 50:11

"I know all the birds of the mountains; And the wild beasts of the field are mine." — Psalms 50:11 (ASV)

I know all the fowls of the mountains
God not only knows them, but takes care of them; not a sparrow fails to the ground without his knowledge, and all the fowls of the air are fed by him, (Matthew 10:29) (6:26) ; and therefore needed not their turtledoves and young pigeons, which were the only fowls used in sacrifice;

and the wild beasts of the field [are] mine ;
which are mentioned in opposition to domestic ones, such as they had in their houses or folds, (Psalms 50:9) .