Mike, you did the right thing
I would do the same. I would not leave an animal to suffer while I went to find some "authority".
Those conservation groups should hush up. They're just upset they didn't get the credit for the save.
I never could stand the notion of "let the authorities handle it." I say, if you see something broken, and you can fix it, just go ahead and fix the problem. Passing said problem along to the next person never gets anything done.
Cheers Chef Mike