Plainwell, MI, USA
It was peaceful that day, I was kayaking on one of my favorite lakes. While I was there I saw nest boxes and decided to check them out. As I approached an adult tree swallow came and then left, I lifted the box top and took a quick peek inside, and there were five or six swallow nestling all huddled together. I checked out other nest sites too that day, one had an egg and another had nestlings.