Vultures
There are four species of New World vultures in Costa Rica. While not especially well-liked or good-looking, vultures flaunt some brilliant colors. Their bright hues serve as a signal among mates and potential pairs of vultures. Furthermore, these guys are essential for ecosystem balance. Without vultures, carcasses would remain longer allowing diseases to spread and insects to boom.
King vulture in Boca Tapada, San Carlos via @adrianzamcr