I haven’t identified the particular species for this (please comment if you can!), but I think it is such a beautiful bird. The colours are really shiny and bright and I find it amazing how fast the wings move.
I didn’t actually see that many hummingbirds when in Costa Rica. The best one I saw was actually when I was zip-wiring over the canopy in Monteverde. The hummingbird was hovering next to the zipwire and had to quickly scoot off to avoid being hit by me coming down.