As the old adage goes, "health is wealth", and it brings home the point when one considers the importance of keeping our bipedal companions free from diseases or any debilitating illness. After all, we constantly require eggs and chicken meat from them, so it goes to show that the general health of the poultry can be important to sustain our own.
THE PERFECT ENVIRONMENT
The general well being of a chicken starts with the environment. While it's true that chickens adapt real well to both cold and hot weather, constant exposure to harsh climates can still get the best of them. That's why a coop or a hen house should be set up, while making sure that it's well ventilated and free from draft. Make sure that the perches are not too high to prevent any foot injuries. Keeping the chicken house devoid of moisture also helps prevent diseases that result from ammonia and other toxic gases.
And of course, you have to maintain cleanliness in the coop and its surrounding environs to prevent the proliferation of mites, lice and other critters. These pests can cause serious health risks if left alone. Regular cleaning through the use of clean water and disinfectants should always be undertaken to maintain a healthy environment for your chickens.
PROTECTION FROM PREDATORS
Chickens are delectable treats for any predators prowling the area around the coop. To ensure the safety of your hens, make sure that the coop and the fence around it is well sealed. Do not settle for just any wire to build the fence, and use one that is durable. The fence should be high enough that even high leapers can't jump over it, and its bottom buried deep enough (20 inches at the very least) under the ground to prevent predators from burrowing underneath.
PROPER FEEDING AND WATERING
Just like with any livestock, chickens need a well-balanced diet and a daily intake of water. A waterer device is a great tool for providing drinking water due to its timer and operant conditioning capabilities. Chickens have a formulated diet that depends on their needs as befits their age and what they're meant to provide. You might do well to do some research on the recommended diet for your chickens to ensure that they are getting the proper nutrition they require.
GIVING CHICKENS THEIR SPACE
Not giving chickens enough space to move about or "free-range" can induce a lot of stress in them, which in turn becomes detrimental to their health. Crowding can also lead to lots of fighting inside the coop, and will eventually run the risk of some chickens getting seriously hurt. Remember that each chicken should have a two square foot of shelter and a three square foot of run area, so take note of the amount of space you have in your back yard when choosing the amount of chickens you want to raise. If there's not enough, then make sure to clear enough space for them to run about as soon as possible.
Answers To Raising Chickens - A Complete Guide To Keeping Chickens