Describe simply how to selectively breed chickens?

Answer 1

Getting faster, more positive results from this type of selective breeding takes time and patience.

You will need to start out with a lot of stock as you will likely be culling left and right. Allow the hens to mature fully before beginning to base your plan for culling.

When they are of age, first things first, tag all your hens with bands. with unique numbers or color combinations so that you can tell individuals apart. I would use some text/graph/table software to keep up with the hens rate of lay, temperament, health, and if you're truly concerned about producing quality birds her temperament as well. Optionally, also her appearance and egg color/size. You will need to be able to verify what birds are producing exactly what eggs so that you know who to cull and who to keep. They make laying boxes which also trap the birds inside, or you could build these boxes instead of buying them. Mark each hens egg production down daily. After a few months you will be able to see which birds should be kept for breeding and which should be culled from the flock.

Continue to do this for several generations and you've achevied your goal.

Answer 2

Basically chose the ones you like most. Look for good traits. Ex: good feathers, type of comb you want, length of legs, size of egg (except hybrid parents don't tend pass this trait all the time), size. You be the judge unless you want to show the birds. Then you need to go by standards.