iNaturalist is one of the social network that is used for naturalist, and scientists who share their information about different species.
Audubon
is an American National Audubon Society, and one the organization that protects birds and their habitats.
Allaboutbirds
is a free resource that has various kinds of information about birds.
NestWatch
is one of the nest-monitoring website that is used for tracking the status of the birds. It has statistics about birds biologies. NestWatch is user firendly and it can be used by anyone.