It IS possible to introduce new chickens to a different group of birds without drama or bloodshed. Integrating new chickens into an existing flock does not have to be stressful for the chicken keeper or the chickens. HERE's HOW!
Ways To Boost Your Chickens’ Protein Over The Winter
Not every hen will become broody in her lifetime, but those that do are fiercely protective of their nests. Some breeds are more inclined to brood than others; in particular, Silkies, Cochins and Australorps are perpetual contenders for the Broody Mother of the Year Award.
Is this your first year keeping chickens? Don't be shocked when they start to molt. Here's some insider wisdom on the molting process: http://blog.hgtvgardens.com/backyard-chickens-its-raining-feathers-when-the-chickens-molt/