I have just over an acre for my chickens to roam. They use just around the house as their limit so I know if I cannot see them, they are not far. I looked out the window today to find them all in the large run of their coop looking out with necks held high. I looked up and saw something move past the trees. At first I thought it was a dog and started for my shoes before I saw it was a peaceful deer. Two actually. Slowly passing through and the chickens were so funny in how cautious they were. How alert to the deer they were. They weren't even all the way out of the yard before my bravest hen walks right back out and starts looking for bugs. I do not think deer are a problem unless the chickens try to start a fight first. Which mine totally would, they chase anything, dummies. I just never thought about the deer and didn't know if I should worry?