Okay, I'm NOT a cat hater here but here's my situation. I live on a corner lot that backs up to a lake. Last year, I put a bluebird house up in my back yard. I was really excited when the birds showed up the next day and showed interest in it because bluebirds are bug eaters. About a few weeks later, they built in the house. I started monitoring the nest and noticed the female laid 4 eggs. I was really excited. Just a few weeks after that, I noticed that they quit coming around. I checked, the eggs were still there and were cold--they'd abandoned it. I scraped the nest and eggs out and hoped for the best as sometimes bluebirds have multiple broods a season. Sure enough, they came back and built again. They laid eggs again and I kept a watchful eye. Within weeks, I could hear babies. When the babies were just about to fledge, I noticed my neighbor's tomcat prowling my yard. One night when I was outside, the little rascal took a flying leap straight from the ground to the birdhouse, draping himself over the top and reaching inside. I reached for my pellet rifle and took action. When I inspected the house, I noticed there were clawmarks ALL OVER the house. It is quite likely that he is responsbile for my first nest being abandoned. My question is--what can I do to keep this cat away from my birds? Does anyone know if those baffles work? Since the house went up, I've built a vinyl fence so I know the cat won't be able to jump on the fence or use it as help to get to the house this year, but I've also put up a martin house this year and I don't want him stalking babies that think they can fly before they really can or jumping on the bluebird house again. I'm trying to keep my bug eaters in my backyard. The cat is not a total nuisance, he does kill rats and stuff in the field. He left one on my porch for me last year. What can I do to make this cat leave my birds alone and go after other prey?