Long ago I put a rain barrel near my chicken coop so they'd have water. I came to the conclusion that it wasn't necessary. The main reason being that I no longer have any chickens. The other reason was that it was easy to just connect the long line of drip irrigation tubing from the house directly to the chicken waterer and not have the extra barrel sitting there.
It made much more sense to move that barrel to the front of my house to increase the capacity of the drip irrigation system for my raised bed gardens.