Hey, not sure where you are located in Eastern MA, but if you are near Weymouth have you considered taking it to the NE wildlife center? They take care of all sorts of injured wildlife. http://www.newildlife.com/Content/Work.html Just thought I'd mention it

Greg Mertz also operates in Needham at the Chestnut Street Animal Hosp., and I've seen people bringing in various little critters to him there, so you could try that.