This is what I wrote in the mammal report that I wrote: I arranged the tour with Caio Brito of Brazil Birding Experts. This was the best possible choice I could have taken. Not only is Caio an outstanding birding guide, he also is a great person to be with. We spent hours in the car (we drove 3350 km) talking about birds, life, and everything in between. He is extremely hard-working in the field, and while he is not a mammal expert, he had no problems with getting up at 1:30 to reach a forest site in the dark to look for bats. He also has an extensive network of contacts and was able to obtain tons of useful information during the trip. I am looking forward to doing another tour with him.