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A group of similar living things that are capable of interbreeding with each other and of producing fertile offspring that resemble themselves. Species are are the fundamental units of biological classification. Some species have distinct populations that vary from each other [1].

See also

References

  1. ^ France, Peter; et al. (2007). Bird: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN 1564582957. 
Anatomy of an amiotic egg.svg 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.svg 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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