Just received my first copy. I thoroughly recommend it. It is aimed more at the serious wildlife enthusiast, and will be of particular use if you are studying wildlife related topics, with many reports backed up with useful data.
Plenty of info on subjects such as wildlife management, conservation and ecology.
This particular copy (april 2006, special 100th edition) has an interesting article on 'phenology', and another entitled 'hedgerows and the historic landscape'.
By the way, if you don't know what phenology is, look here:
http://www.phenology.org.uk/
Magazine size: 25cm high by 17cm wide. 304 pages.
A very good read