Is there methods to teach young cats to leave chickens alone? I have 3 kittens who are recently moved outdoors, and the two males are very interested in my flock. They have chased my two bantams, and stalked the others. They also are interested in the call ducks, but they are in a pen right now so they haven't chased them yet. It seemed to help when I threw a bucket at one who was stalking the banty roo.
Sorry to just see this (5 years later--what a way to bump a thread), but this is a GREAT time to train your kittens.
First, if you have flock guardians (aka flock guard dogs), introduce your kittens to the dogs as a member of the pack. A good flock guardian/pack can help train the kittens what is and is not appropriate behavior. And if your kittens are included into the dog pack (yes, it is absolutely possible to socialize your kittens so they become part of a pack of well-socialized dogs), with a little luck, your cats will actually learn to protect your flock.
Second, if you do not have flock guardian dogs, you will need to introduce the chickens to the kittens and visa versa in the role of the alpha/leader. A good roo or lead hen can also let unwelcome predation behavior from kittens be quickly squelched with a few harsh pecks. Anything more or repeated by the roo/hen would need to be corrected by you (the alpha) so the chickens also learn what is tolerable and unacceptable behavior.
Last, distinguish if your kittens are demonstrating stalking or herding behavior (yes, I'm serious about this). If you have working dogs (like border collies or Australian shepherds), and your kittens observe their herding behavior, it is possible that the kittens can pick up on this and try it out on something that is closer to their size ratio.
It sounds like the behavior you described is more stalking with intent to eat prey/chickens, so intervening as a strong and gentle leader to and socialize both your chickens and kittens will be important.
One idea would be holding each kitten gently while walking up to one of the gentler hens, getting down on your knees while still holding the kitten in your arms, let the curious chicken come up to you and investigate the kitten and let them sniff each other while talking in a gentle voice and petting the kitten. This lets the kitten know this is okay behavior. Cats respond very well to positive reinforcement and confidence is developed when they feel safe in a task.
Hope this helps!
P.S. Wide berth socialization of kittens/puppies with your farm animals aka kitten/dog/chicken/duck/goose introduction does wonders for not just your cats, but also your chickens. The result can be cats who think they're flock guardians along with the dog flock guardians. The most fun is when the cats actually work in teams with the dogs to herd chickens and then take this to heart to try to herd wild birds--wild turkeys dont like to be herded LOL.