Sue, when you "stun" the bird... do you just creep up behind them?!
or how do you actually go about it?
I just pick them up as normal, and whilst I have them in the crook of my arm I find they are generally looking around, and a quick bash does the job. Not nice, but it seems quick and I have found knocks them unconscious then I use the dispatcher.
I think in general we are far more aware, and do more "thinking" about stuff. Animals/birds react to the situation, so if you want to catch a sheep to check if it has flystrike it doesn't seem much worse than catching it a zapping it with a humane stunner.
As I say I don't like doing it, but without me the foxes, rats, buzzards, etc etc would have finished them off long before.
Sue