Whiffling

From Wikipedia, the free encyclopedia
Whiffling is a behaviour some birds perform before landing.

Whiffling is a term used in ornithology to describe the behavior whereby a bird rapidily descends with a zig-zagging, side-slipping motion. Sometimes to whiffle, a bird flies briefly with its body turned upside down but with its neck and head twisted 180 degrees around in a normal position. The aerodynamics which usually give a bird lift during flying are thereby inverted and the bird briefly plummets toward the ground before this is quickly reversed and the bird adopts a normal flying orientation.[1][2] This erratic motion resembles a falling leaf, and is used to avoid avian predators or may be used by geese (family Anatidae) to avoid a long, slow descent over an area where wildfowling is practised.[3]

The behavior is seen in several species including lesser yellowlegs (Tringa flavipes), the black-tailed godwit (Limosa limosa), the northern lapwing (Vanellus vanellus), geese (e.g. pink-footed goose (Anser brachyrhynchus)), three species of scoter (Melanitta), and other members of the family Anatidae.[4]

References

  1. ^ Ogilvie, M.A. and Wallace, D.I.M. (1975). "Field identification of grey geese". British Birds. 68: 57–67. 
  2. ^ Ceurstemont, S. (January 25, 2012). "Goose flying upside down captured in slow-mo movie". New Scientist TV. Retrieved April 19, 2017. 
  3. ^ Weaver, Pete (1981). "Whiffling". The Birdwatcher's Dictionary. Calton [GB]: T. & A.D. Poyser. ISBN 0-85661-028-3. 
  4. ^ Humphries, D. A.; Driver, P. M. (1970). "Protean defence by prey animals". Oecologia. 5 (4): 285–302. doi:10.1007/BF00815496. 

External links

  • Goose flies upside-down
  • Whiffling geese: photographs and comments on reasons
  • Slow-motion video of whiffling geese
Retrieved from "https://en.wikipedia.org/w/index.php?title=Whiffling&oldid=776201106"
This content was retrieved from Wikipedia : http://en.wikipedia.org/wiki/Whiffling
This page is based on the copyrighted Wikipedia article "Whiffling"; it is used under the Creative Commons Attribution-ShareAlike 3.0 Unported License (CC-BY-SA). You may redistribute it, verbatim or modified, providing that you comply with the terms of the CC-BY-SA