Emlen funnel

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
EmlenFunnel.svg

An Emlen funnel is a bird cage shaped like an inverted cone, used to study bird behaviour, in particular birds' migratory instincts. It is named after S T and J T Emlen who introduced the technique in 1966.[1] An ink pad is placed on the bottom, so when the bird hops or flutters onto the sloping walls it leaves a track before slipping back down again. The bird's view through the top of the cage can be manipulated to show how it responds to different apparent "star patterns" (actually generated in a planetarium).[2]

References

  1. ^ Emlen S.T. and Emlen J.T. Jr. (1966). "A Technique for Recording Migratory Orientation of Captive Birds" (PDF). Auk. 83 (3): 361–367. doi:10.2307/4083048.
  2. ^ Dingle, Hugh (1996). Migration: The Biology of Life on the Move. Oxford University Press. p. 88. ISBN 978-0-19-508962-2.


Retrieved from "https://en.wikipedia.org/w/index.php?title=Emlen_funnel&oldid=747473835"
This content was retrieved from Wikipedia : http://en.wikipedia.org/wiki/Emlen_funnel
This page is based on the copyrighted Wikipedia article "Emlen funnel"; 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