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A level used in classification. In the sequence of classification levels, an order forms part of a class and is subdivided into one or more families. The world's birds are separated into 45 [1] orders [2]

References

  1. ^ It originally said 29, not 45.
  2. ^ Frances, Peter; et al. (2007). Bird: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN 1564582957. 
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.


Hemipus picatus This article is part of Project Taxonomy, a All Birds project that aims to write comprehensive articles on each taxonomic term.

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