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| The most feathers ever counted on one bird was 25 216 on the Tundra Swan Cygnus columbianus. 80 per cent of feathers were on the bird's head. |
| The Peregrine Falcon Falco peregrinus is the fastest bird and fastest of any kind of animal. It can reach speeds of at least 200 km when diving for prey in the air. |
| Hummingbirds have the fastest wingbeat. The Horned Sungem Heliactin cornuta, in tropical South America beats its wings at 90 beats per second. |
| Hummingbirds, Family Trochilidae have been recorded in experiments, hovering for 50 minutes. |
| Relative to body size the Long Rufous Humingbird Selasphorus rufus makes the longest migration. It measures 10 cm and flies from as far north as Alaska to Mexico and back again - 10 000 km. |
| The highest recorded altitude for any bird was 11 277 m for a Ruppell's Griffon Vulture Gyps Rueppellii. It flew into a plane. |
| The largest bird egg is from the Ostrich Sturthio camelus. The egg measures 15 - 20 cm long, 10 - 15 cm in diameter and weighs 1 - 1.78 kg. |
| The smallest known egg is the egg of the Vervain Hummingbird Mellisuga minima of Jamacia and nearby islets. The egg is barely the size of a pea and measures less than 10 mm in length and weighs 0.356 g. |
| Emperor Penguins Aptenodytes forsteri make the deepest dive of any bird ranging from 444 - 483 m. They also stay under water the longest. The maximum dive time recorded has been 18 minutes. |
| The only poisonous birds known are the three species of Pitohui from Papua new Guinea - the Hooded Pitohui Pitohui dichrous the Rusty Pitohui P. ferrugineus and the Variable Pitohui P. kirhocephalus. The Hooded Pitohui is the deadliest. The skin and feathers contain almost the same homobatrachotoxin as the Poison Arrow Frogs. |
| The rhinoceros's horn is made of the same stuff found in our hair and fingernails which is called keratin. It also contains something called gelatin. |
| The typical laboratory mouse runs 2.5 miles per night on its treadmill. |
| A cheetah can run 76 kilometres per hour. |
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