Gold is the new pink: iridescent hummingbirds flummox scientists with a colour change

When you put two pink hummingbirds together, you get…wait, what?

six hummingbird bodies in tray, centre has gold throat and hummingbirds on either side have slightly different pink throats
The gold-throated hybrid, center, with its parent species H. branickii (left) and H. gularis (right), in a drawer the Field Museum’s collections. Credit: Kate Golembiewski, Field Museum