National Audubon Society
http://www.audubon.org/

Michigan Audubon
http://www.michiganaudubon.org/

http://www.capitalareaaudubon.org/

Baker Preserve
MAS webpage

Michigan Bluebird Society
http://michiganbluebirds.org/

General information and links to subscribe unsubscribe 
https://glc-lists.merit.edu/sympa/info/jax-birds

Jax Birds Archives
https://glc-lists.merit.edu/sympa/arc/jax-birds

MI Breeding Atlas
http://www.mibirdatlas.org/

A Birder's Guide to Michigan (ABA)
THE guide to birding in Michigan
Available from the MAS bookstore, Discovery Center in Waterloo Recreation Area, and online at Amazon. 

Cornell Lab of Ornithology
http://www.birds.cornell.edu/

Whitefish Point Bird Observatory
http://www.wpbo.org/

Great Lakes Environmental Network 
http://www.glin.net/envt/