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File:Mallard speculum.jpg

The speculum is a patch, often distinctly coloured, on the inner remiges of some birds.

Examples of the colour(s) of the speculum in a number of ducks are:

Bright wing speculums are also known from a number of other birds; among them are several parrots from the genus Amazona with red or orange speculums[5], though in this case the colors are pigmentary and non-iridiscent.

References

  1. ^ a b c d Dunn, Jon L. and Alderfer, Jonathan (2006). National Geographic Guide to the Birds of North America. National Geographic Society. ISBN 1426200722. 
  2. ^ a b Bellrose, Frank C. and The Audubon Society (1983). The Audubon Society Master Guide to Birding. National Geographic Society. ISBN 1426200722. 
  3. ^ a b Madge, Steve; Burn, Hilary (1988). Waterfowl: an Identification Guide to the Ducks, Geese, and Swans of the World. Boston: Houghton Mifflin. ISBN 0-395-46727-6. 
  4. ^ Zimmerman, Dale A., Turner, Donald A., and Pearson, David J.; Illustrated by Zimmerman, Dale A., Willis, Ian and Pratt, H. Douglas (1999). Birds of Kenya and Northern Tanzania. Princeton University Press. ISBN 0691010226.  Cite uses deprecated parameter |coauthor= (help)
  5. ^ Robert S. Ridgely and John A. Gwynne, Jr. (1989). Birds of Panama with Costa Rica, Nicaragua, and Honduras. Princeton University Press. ISBN 0691085293. 
Anatomy of an amiotic egg This article is part of Project Glossary, a All Birds project that aims to write comprehensive articles on each term related to animals.


Little Pied Cormorant This article is part of Project Anatomy, a All Birds project that aims to write comprehensive articles on each anatomical term related to birds.

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