I really like this.
Some reviewers have complained about the couple of fellas wittering on and said they would have preferred to just hear the birdsong without the commentary, but I think the commentary adds a lot. Without it, listening to this would be quite hard work, whereas I find this a real pleasure and can listen to it over and over again (you have to if you want to memorise the songs).
If you're a hardcore birdwatcher who wants a detailed reference, this will disappoint, but if like me you just want to know what is making the racket in your garden, this is lovely.