This is a good point, some think, including myself in the past why get white chickens they are so much easier to spot.. but hawks can see everything from high up and eagles, we did have some bird fly over the other day not sure what it was, but there are kites around here so maybe one of them...
Yes U can free range them let them out when U go out. The chooks n rooster here are out all day, they go bed at night in an enclosed area in a shed now. However we use to just have coops out in the yard for them and left them open 24/7 even at night, chooks sometimes slept in them and sometimes...