Forests link and a programme to listen out for

I have found it surprising how large trees can grow very close to each other. 8'ish years ago I needed some "screening" on part of my garden so decided a rough hedge as diverse as possible so planted, holly, wild privet, hazel, dogwood, field maple, wild cherry (and probably a few others I can't remember), all randomly mixed. I now cut it at about 3m heigh to be sort of hedge shaped but the trees were planted around 18" apart and I'm amazed how large the trunks of the tree species have become.

It's dense. Initial camera-trap isn't showing much living in it but there are nearby better environments (long large piles of prunings/wood/leaves, bramble bushes, etc.).

Ian