Many butterlfies have filamentous "tails" at the ends of their wings and eye-patterns of markings on the wings themselves. These combine to create a "false head". This misdirects predators such as birds and jumping spiders. Spectacular examples occur in the Lycaenid butterflies; when perching on a twig or flower, they commonly do so upside down and shift their rear wings repeatedly, causing antenna-like movements of the "tails" on their wings. Studies of rear-wing damage support the hypothesis that this strategy is effective in deflecting attacks from the insect's head.