 The buff-breasted paradise kingfisher is believed to migrate in flocks at night as large numbers of birds suddenly appear in Queensland rainforests at the start of the breeding season early in the morning.Many birds are believed to perish during the 80 km flight from New Guinea to Australia.The birds have been recorded flying close to the water and drowning in sea spray, colliding with the Booby Island Lighthouse, and arriving at their destination in a state of severe exhaustion.