I let my eight birds out in the AM when I am leaving for work.
I have two acres surrounded by woods. The sight of hawks send them under our burning bush. We have not had any issues with predators. (Knock on wood.)
They spend some time at the edge of the woods, but love the lawn and gardens. They have played havoc in any garden that is not fenced. The coming spring will be spent re-thinking our defenses.
They put themselves to bed as soon as the sun starts to set and we lock the door behind them.
We have chickens for the eggs and as pets. Having them in the yard eating bugs, grass, Japanese beetles and going where they want to go... feels right. It is also nice that they follow us around the yard and seem to be curious about us.
Free ranging during the day has risks, but we like the rewards.