I moved a couple of years ago, to an area about a half hour's walk (for humans) along a main road.
Walked with my cat around the small estate the first evening around 7pm (to one or two strange looks - not everyone has seen someone walking with their cat {*}, it seems) and came home, gave her some food.
Went out with her for another walk around 11pm (it was June so warm and not especially dark) and next day let her out by herself, wandered out soon after and called her for some food and have never looked back.
There's a field behind back 3' wall so she can jump down into field - which tapers and where I am is narrow - about 20 feet to the main road. She pops into the field sometimes, but spends more time on garage roof in the sunshine to be fair.
The first time she saw a bullock's head and long tongue, going for some leaves off one of my bushes, she was a little shocked. Also when she first heard sheep (field other side of the main road), and a squirrel in the field.
{*} Note, cat walking independent of me - nothing silly like a lead or collar - she could go where she wanted, just happy to walk alongside me, as she had done when we lived in previous property. It is a little odd, however, that when she goes off for a walk she can be away for a few hours, but if we go for a walk together, then if I am out of sight for a few minutes, she starts miaooww noises as if she's frightened, and calms down once I am in view again!