I bought this book, as I imagine most do, just before heading off on my dream holiday to Ecuador and the Galapagos. We visited mountains, cloud forest, amazon rainforest and the Galapagos and I wanted a book to cover it all for mammals, birds and lower vertebrates. In principle that is what I got, the information on habitats and the basic ID's for most species were there, all in one portable book.
However, I felt let down by the generalness of the species ID section, it really needs to be bigger. I am not a die hard birder/biologist by any stretch of the imagination, but I do like to actually have some scope in which to identify common species and I found myself time and again putting this book aside to borrow other material from the lodges/hotels and other travellers, which was a shame. If I went again, I would not take this book with me.
It still gets 3 stars as the information it contains is interesting and it is by no means a bad book, just didn't do what I wanted it for well enough!