Quiz 37: Bird topography

Concord, MA. 29 Apr 2009. Copyright David Sibley.

Test your knowledge of bird feather topography with the questions below.

[mtouchquiz 45]

4 thoughts on “Quiz 37: Bird topography”

  1. I would love to see an illustration of the extended wing showing the feather topography and how that corresponds to the folded appearance. Thank you for all the great information you provide!

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