Mass Wildlife now has a Waterfowl Identification class open in Carver. I've been checking every few days and just saw this appear today. Last year it filled up very quickly and I didn't get to register, so I wanted to pass along the info. As of about 10:15 this morning, there were still openings available.
Details at http://www.mass.gov/dfwele/dfw/education/hed/hed_waterfowl_id_listing.htm
Details at http://www.mass.gov/dfwele/dfw/education/hed/hed_waterfowl_id_listing.htm
