The Wild Birds Unlimited website has a huge educational section that includes information on bird feeding, bird species, bird behavior (such as bathing, courtship and migration), choosing binoculars, and creating a wildlife habitat in your backyard.
"Here you will find the basic ingredients that when mixed together will create a recipe for a successful backyard bird feeding and habitat program."
Project Feeder Watch is a winter survey of backyard birds. From November through early April, participants periodically count birds at their backyard feeders.
Audubon offers tips on safely attracting and feeding birds, maintaining a feeder and guarding against squirrels.
All About Birds provides great advice on choosing a bird feeder, types of bird seed, and where to place your feeder.
Bird Feeding website reviews.