Genderfluid White-necked Jacobin Sticker

Female White-necked Jacobin hummingbirds are known to display a form of "genderfluid" behavior, where about 20% of adult females retain the colorful, male-like plumage they possessed as juveniles. This plumage, characterized by a bright blue head and white tail, acts as a "disguise" that allows them to avoid the intense aggression/bullying from males and other females, particularly at food sources.