Which hummingbird?

This hummingbird is a bit more colorful than the Little Hermit of last week. When Alan sent this image to me, we had a bit of debate as to which hummingbird it actually was: Scaly-breasted (Phaeochroa cuvierii) or Rufous-tailed(Amazilia tzacatl)? Both can be readily seen around Chan Chich Lodge although the Rufous-tailed is by far the more common. This photo seems to show a "scaly" breast ...

However, I recently learned that female Rufous-tails have white edged feathers on the throat. So we'll go with Alan's original ID!