First, I have to say that the scenery, hike, pools, and suspension bridges were fantastic and are alone well worth the entrance fee. With a primary interest in wildlife viewing, I was really excited to visit this park, especially after looking at the biodiversity photos on the web site. I have no doubt that there is considerable wildlife to be found at the park, and that there is nothing assured when it comes to encountering wildlife on any given day -- I may just have had back luck. However, the person I assumed was manager of Rainmaker really put me off. I came one afternoon and asked about birds I might expect to see. He obviously had little knowledge or interest and provided no substantive feedback on what one might expect or where to even start looking (when asked about certain species). The next morning I came back to access the park (raining the previous day) and asked the manager what bird might be making a dramatic call that could be heard from the main building. His response "I really don't pay attention, they drive you crazy after a while". This was in sharp contrast to other biologists/guides we had encountered throughout Costa Rica whose knowledge of species, habitats, and activities was exceptional and their enthusiasm great. Although only inferred on the web, I doubt the species accounts/photos of wildlife for Rainmaker are actually attributable to the park itself, but were developed from potential area species lists and perhaps stock photos. Personally, my eagerness to see even some of the wildlife represented on their web ended in real disappointment, and I think the park management could substantially elevate visitor experience if they were more in-tune to the biological resources in their own habitats.