I took this book out with me to the Mexican island of Cozumel & kept it in my ruck sack the whole time, every time I saw a bird or creature I was able to find it in the book with it detailed pictures & good descriptions. I identified a wide range of wildlife that I stumbled across including a Boa Constrictor & other tree snakes, a Marine Toad, Vultures my partner even saw a Grey Fox.
I always use my luggage allowance on reference books when travelling to foreign climes. We went to Tulum and did nummerous trips to many different areas. Reef, rain forest, cenotes, magrove, ruins, gardens in the hotel etc. I am somewhat of a serious birder, and did fours dives, I was sceptical that this book would suffice but it did and then some. I saw loads and all of it was easily identifiable in here. There is a newer version but i went 2012 and it was accurate then. Really good reference guide and excellent value.