Prehistoric.
Here is a magnificent frigatebird (Fregata magnificens). I believe this is a first-year juvenile, identified by the white head and breast. I just realized that I'm not sure if I've ever seen an adult. I'll need to look through my photos more carefully.
"Beachgoers delight in this large, black pterodactyl-like bird that soars effortlessly on tropical breezes with hardly a flap, using its deeply forked tail to steer. Watching a Magnificent Frigatebird float in the air truly is, as the name implies, magnificent. These master aerialists are also pirates of the sky, stealing food from other birds in midair. Males have a bright red pouch on the throat, which they inflate like a balloon to attract females. Females unlike most other seabirds look different than males with their white chest." - allaboutbirds.org
