When I was at school we had a brilliant biology teacher, a real countryman, he whipped in to a pack of foxhounds and the otterhounds and kept goshawks. One day we trooped into the classroom for a double biology lesson and there he was sitting up front with a dead Goshawk on the bench in front of him. I could see he was in no state to be teaching us that day so we all just quietly got on with some work until the bell went. As I was walking out past him he said " I suppose you are wondering what happened John" He had been flying her at rabbits and one jinked into a hedge suddenly, the hawk broke its neck when it hit the hedge.
He also had a good sense of humour, for one project that I had not put enough effort into he awarded me a mark of F-, but also gave me an A+++ when I brought a complete magpie nest in with a fair chunk of the hawthorn tree.
The career advice he gave me was that it doesn't matter what you do in life as long as it pays well enough for you to enjoy your hunting.
I don't suppose they make teachers like that anymore!
Sorry that you lost your Harris, hope you find another.