That certainly looks like some species of willow to me. There are over 100 species of willows (Salix spp.) native to North America (quite a few in New England, too), and they are difficult to identify to species. But cows don't care which one they are, they just eat'em all!
"In a fruit forest everyone is happy"- Sepp Holzer
Once upon a time there were three bears. And they were visted by a golden haired tiny ad:
montana community seeking 20 people who are gardeners or want to be gardeners