I only had time to get one quick shot of this lovely skimmer. As the eyes and face of the Roseate Skimmer are usually darker than the body, I believe this is a Carmine Skimmer, which was split from the Roseate Skimmer some ten or fifteen years ago.
Nikon COOLPIX P610 1/250s f/5.6 at 80.6mm iso160
full exif