You can't. That is impossible. The only way to get feathers on Minecraft is from chickens.
You should never put anything over a chickens head to begin with, so no.
Chickens can be fed seeds to make them breed.
You feed CHICKENS by right clicking them with seeds.
seeds
you get carrots in minecraft from baby zombies on chickens or spiders, you have to kill them and then you will get them.
Use eggs.
You can tame chickens in minecraft. with seeds. :) and you can tame creepers by tossing them a red flower as of 1.8 by left clicking on them.If two loving chickens meet they will breed and make a baby chicken. your welcom@!!!
Usually, a head piece will come with a full outfit, apart from that, I don't think you can buy headgear by itself.
You go up to a chicken, put your cursor (the little plus in the middle) over the chicken, and then keep on left clicking it until it dies.
Wheat, just like every other animal.
The most common creature in minecraft are cows, pig, chickens and shepp. But it also depends on the seed