It's a slow shift so, I have a bit of time

On the recall front.....It probably doesn't sound very helpful to say that they are all a little different. With some treats work a treat, others it has to be juicy chicken breast, with others, as pups, I have had to roll around in the grass acting a fool to get them to come to me, if something else looks/smells more interesting than me!
They are very smart dogs, perceptive and calculating and they stop to think. Why does he want me to go to him? What am I missing out on if I do? Is there something more fun in the area than going back to him? That sounds anthropomorphic but you really can see them stop and think. The buggers will even look around and air-scent if you call them back and they gauge from your body language that you have seen a hare or deer that you don't want them to see (read 'chase').
Mine are generally okay, most of the time. However, if they 'open up' on a scent (yip yip yip) I know it will be a case of waiting for them to return. Hendrix does a 5 mile off-lead circuit around the farm almost daily. 95% of the time he will be in a 50 metre radius of me, flush a few birds, push through some cover, come and check in with me every minute or so. Last Sunday, literally 200 metres from home he went into a run into a rape field. After waiting for an hour, searching, going back and waiting for an hour and searching some more I found him 5 hours later, 50 metres from where we parted company. His eye sockets red raw from pushing head first through the rape and he had stripped most of his coat. I felt guilty as there is a lot of young wildlife around at the mo. Oh the fun of owning working-bred dachshunds