Chicks typically need a heat lamp for about 3 to 6 weeks, depending on factors like seasonal temperatures, housing conditions, and how quickly they develop feathers

. In colder environments, heat lamps may be necessary up to 6 to 8 weeks to keep chicks warm until they are fully feathered and able to regulate their own body temperature

. Key points on heat lamp duration and temperature management:

• Brooding period: Usually lasts 3–6 weeks; chicks need supplemental heat during this time because they cannot maintain body temperature on their own

• Temperature guidelines: Start at about 90–95°F (32–35°C) for newly hatched chicks, then reduce by about 5°F each week as they grow and feather out

• Feather development: By 4–6 weeks, chicks are generally fully feathered and can be weaned off heat lamps if ambient temperatures are warm enough

• Environmental influence: In warm home environments (around 75°F), heat lamps may only be needed for about 4 weeks, but in cooler barns or garages (around 60°F), heat lamps may be required for the full 6 weeks or longer

• Behavioral cues: Chicks huddle if too cold and spread out or pant if too hot, which helps determine if heat lamp adjustments are needed

In summary, most chicks need a heat lamp for about 4 to 6 weeks, sometimes up to 8 weeks in colder conditions, gradually lowering the temperature as they grow until they are fully feathered and able to maintain their own warmth