Instruct: Classify a given Amazon review as either positive or negative.
Query: Does the job

I bought this to keep my Guinea Fowl warm in their coop over the winter. We've had a brutal winter with some nights well below zero, and it has kept them warm enough. I have two of these ceramic heat lamps going on the coldest nights. It was easy to install, easy to aim, and has kept my Guineas from freezing during the worst of the winter. It is not enough to keep the coop warm, which would be too expensive to run. I didn't expect them to be. I have these hanging above their roosts and aimed at where they always roost for the night. They always appear happy and comfortable in the mornings. These are just enough to keep them happy without a huge heating bill.