Good luck with your collie, mine came from a farm on her last chance , she had no eye so they decided she didnt deserve food, (well one triangle tux biscuit a day-that equates to a skeleton) - or to be kept safe while in season, they saw that as a joke. I couldnt leave her there, even though id wanted an older dog. And she is a darling, so well behaved. Your Blue just sounds like he needs to learn the ropes, he sounds like he is in the right hands now, and if you cant keep him that you will make the right choice of new owner. People can be so heartless and cruel, good on you for taking him, and i would be furious if i were you too. I am sorry about your hen though.