Astrapia mayeri - Bird of Paradise

Astrapia mayeri
The ribbon-tailed astrapia's white feathers grow up to three feet (one meter) long and likely signal health and fertility to females. This young male's tail may not have reached its full length.

Trailing a streamer three times the length of its foot-long (0.3 meter) body, the ribbon-tailed astrapia boasts the longest tail of any bird. Such an encumbered bird would be easy prey in most places, but in New Guinea predators are few. Genetic innovations endure if they offer an advantage in luring a mate.

Source:
http://ngm.nationalgeographic.com/2007/07/birds-of-paradise/laman-photography