That's a beautiful shot. You can actually see the falls real well on the scenic overview during the winter, but the foliage has bloomed incredibly this summer!
I really enjoyed this fairly new addition to the zoo, and it is by far and away the #1 attraction at Buffalo Zoo. There were at least 4-5 Cuvier's dwarf caiman in the water on my visit, along with a number of Giant South American river turtles. The howler/squirrel monky mesh exhibit is a decent size, the waterfall is spectacular, the anaconda exhibit is impressive, and even the ocelot habitat has some good vertical climbing opportunities in it. If only the rest of the zoo was even half as nice...