Smallest Bird of Prey - The black-legged falconet ( Micrphierax fringlius ) of southeast Asia and the white-fronted or Bornean falconet ( M. latifrons ) of northwestern Borneo both have an average length of 5.5-6 inches, including a 2 inch tail, and weigh approximately 1.25 ounces. It is native to Brunei Darussalam, Myanmar, Thailand, Malaysia, Singapore and Indonesia.
Heaviest Birds of Prey - Andean condors (Vultur gryphus) are the heaviest species of bird of prey. Males weigh 20-27 pounds and have a wingspan of at least 10 feet. A male California condor (Gymnogyps californianus) preserved in the California Academy of Sciences is reported to weigh 31 pounds. It is rare for the species to exceed 23 pounds in weight.
Biggest Seabird - The Northern Royal Albatross (Diomedea epomophora sanfordi) with a wing span 3 metres, flight speed up to 115 km/h. 80% of life spent at sea. White body, black on backs of wings. Feeds on surface shoaling fish and squid. Male and female equal share in rearing chick, raising one chick every two years. Mature at six years, live about 45 years. Mate in October, one egg laid in November, incubation 79 days. Chick guarded for first six weeks, young depart late September.