With so many beautiful birds it is hard to pick a favorite, but I think it would have to be the Blue-crowned Motmot, Momotus momota. Their crown is black and surrounded by a blue band. They have a black eyemask and red-orange eyes. Their nape is chestnut, and their backs are green shading to blue on the lower tail. The tail is very long with a bare-shafted racket tip in adults. I love their turquoise color and iridescent's of their feathers. They sit very still on a branch for a quite a long time, surveying the dense forest around them for small prey such as insects and lizards. The pair that hunted around our cabina at the UGA Eco Lodge would call back and forth to each other; moot .. moot-moot.
Once a month UGA Costa Rica does a bird count and we just happened to be there for the April 2011 one. Something I hadn't really though about was how many of the birds we see around our yards at home also vacation in Costa Rica. Birding with people who know birds well is really a great experience. And we didn't just see birds, there were trees, flowers, insects, frogs and mammals too.