'Sky' in the Bible

“In that day I will also make a covenant for themWith the beasts of the field,The birds of the skyAnd the creeping things of the ground.And I will abolish the bow, the sword and war from the land,And will make them lie down in safety.

Therefore the land mourns,And everyone who lives in it languishesAlong with the beasts of the field and the birds of the sky,And also the fish of the sea disappear.

When they go, I will spread My net over them;I will bring them down like the birds of the sky.I will chastise them in accordance with the proclamation to their assembly.