I started letting my newer chicks out in the chicken yard with my older hens roos and ducks. I have a small kids swimming pool for the ducks. I went out to check on them and when i did a count one was missing. i walked around the yard and found her in the pool. The chicks are now about 6 weeks old. I'm thinking of draining the pool for now since winter is coming on and it will probably start freezing. Have no clue why the chick went into the pool unless it was copying the hens. Even tho I put out fresh water every day the girls like drinking out of the pool. never lost any of them when they were small so i figured my new ones would be safe.