Here is a list of people who accept waterfowl (domestic or non native like mutes)

MASSACHUSETTS

Nevins Farm
http://www.petfinder.org/shelters/MA147.html
http://www.nevinsfarm.com/

Wild Care, Inc.
(508)240-2255
wild.care@verizon.net
http://www.capecodpet.net/wildcare

VeganPeace Animal Sanctuary
(508)650-3659

Winslow Farm
(508)285-6451
wnslofarm@aol.com

If its a native bird i would try this list .
http://www.mass.gov/dfwele/dfw/dfw_rehab.htm
scroll to the bottom and check the list of licensed rehabilitators several of them seem to specialize in birds.

If your close to the border of another state let me know.