The brooder
The most important part of the brooder is the heat source. Newly hatched chicks need to be kept at 35 degrees at first and this is reduced slowly over approximately six weeks. Keeping chicks at the correct temperature is the most important aspect of rearing chicks successfully. If chicks are too hot or cold they will cheep loudly. Check how they are behaving. If they are too hot, they will move away from the heat source and be spread out around the brooder. When it's too cold, they will be huddled together under the heat source. A normal 60w bulb or a red 60w normal bulb do not provide enough heat. Please be wary of cheap brooders that use these for sale on places like Ebay.
A heat lamp or electric hen can be used. Heat lamps should be hung out of reach of the chicks but not too high from the ground. Test the temperature below the brooder at ground level where the chicks will be. It should be about 35 degrees.
There are different types of bulbs for heat lamps. Ceramic bulbs are more economical to use and last longer than infra-red bulbs but they are more expensive to buy. They give off heat but no light. Infra-red bulbs emit both heat and light. In winter, there is not enough daylight for chicks so extra light should be provided. They need about 12 hours of light per day so they can eat enough to grow properly. They will not eat or drink in the dark.
The heat lamp holder will get hot so do not touch it when it is switched on. Also, make sure it is well-secured because fires have been known to start when they have fallen onto bedding.
Electric hens use less power than heat lamps and are safer. The heated plate warms to body temperature and it keeps the chicks warm through contact. It will not burn them if they touch it. The height is adjustable and it should be on the lowest setting for newly hatched chicks. If it is too high, the chicks will get cold.
Do not be tempted to use an ordinary light bulb as a heat source. They do not give off sufficient heat for brooders. Place the brooder away from draughts, radiators, direct sunlight and windows. Bear in mind that the background temperature will affect the temperature inside the brooder. If your central heating goes off at night, is the brooder still warm enough? If you have the brooder in an outdoor building, does it drop too cold at night?