A hatchery is a place where fish or bird eggs are hatched. Do you want to raise chickens so you can have fresh eggs every day? You'll probably buy your birds as babies from a hatchery.
Small poultry hatcheries produce chicks that are usually sold to backyard farmers. Larger poultry hatcheries are more like factories, supplying chickens for meat or eggs to enormous corporations. Fish hatcheries are an important part of fish farming, providing a safe place for eggs to hatch and fish to grow large enough to be used for food.