we found the best (maybe worse depends how you look at it) is mum with kittens.I tend to agree. While I would never presume to say it won't ever happen, I've sure never seen it happen or lost a chicken to a cat. Absolutely chicks and young birds are vulnerable of course. Although my tiny little sebright puff's up her feathers and chases my cats out of the barn on occasion. We have a lot of feral cats in our area and I've had some pretty big, nasty toms show up and slink around but they have no access to younger birds and they won't approach the adult standard size birds. One of my own cats is a big male, (and yes he's neutered!) nearly 20 pounds and an extremely avid hunter. He wants nothing to do with the chickens and stays out of their way, if they catch him in the pasture they run him off!