While Canopy Camp had a lot fewer hummingbird feeders than some of the mid- and high-elevation places I've stayed in the tropics, it had a few more than many low-elevation locations that have none! It can't be easy keeping the feeders from molding immediately in that kind of heat and humidity. I'm not sure that I really kept track of the total number of hummers we saw visiting the feeder, but there were definitely some interesting ones.
Black-throated Mangos were quite common. I can't think of any North American birds that have a dark stripe down the ventral midline the way female and young mangos do.
This is Blue-chested Hummingbird.
The somewhat similar Sapphire-throated Hummingbird doesn't occur any farther north than Eastern Panama. The notched tail isn't visible in this pic.
Willet, but if that's possible then this is the bird to do it. We only saw a couple and only right in camp.
Blue-throated Goldentail is another bird I'd only seen in Costa Rican treetops.
Finally only the 2nd time that I've seen Long-billed Starthroat