This was the only emerald of our trip. It has bright green eyes and a black abdomen that flares out at the tip. The only other emerald in our area that looks similar to the Racket-tailed Emerald is the American Emerald which does not have a prominent club-shape and has a complete whitish ring at the top of the abdomen instead of an incomplete yellowish ring. The American Emerald also tends to fly earlier in the season.