Lovely name- lovely bird!!
Festive Coquette (Lophornis chalybeus)
I saw this lovely hummingbird in the Atlantic Rainforest near Curitiba (south Brazil) when I used to live there until about 10 years ago.
I was lucky enough to get a few photos but as it was quite misty (as it usually is on the mountains in early morning) the photos serve only for reference. I used to go the rainforest, a section known as the Graciosa Trail, once a month when I lived in Curitiba.