If you live in, or regularly visit, the North West you really need to keep this book handy. It has a fairly comprehensive list of sites with all you need to know regarding site location, a list of resident and visiting birds, and a guide as to the best times to visit. I have rated it only 4 stars out of five because the map of South Lancashire on p.119 is totally wrong and the coverage of sites in some areas is less comprehensive than in others. Notwithstanding that, I stongly recommend this book.