An effective nesting thicket is about 8 feet wide and 3 to 15 feet tall. Birds build a nest to keep predators away and hide eggs. Birds need shelter from predators at all times, but it's especially important during the nesting season. When birds are nesting, you'll want to provide an environment free from man or other animals. You'll enjoy following them and watching their daily routine, but don't get too emotionally invested.
Nesting time is a vulnerable time for birds, and losses do occur.
This is a lesson about the balance of nature, particularly for young bird watchers. Nesting and rearing time lasts only about 6 weeks. Make the time more successful by providing suitable housing or nesting boxes for your avian friends. Put your birdhouses up in the fall so they can weather over winter and be ready for birds in the spring. If you wait until spring to put up a birdhouse, you should have it ready by no later than mid-March.