Definition of "avifauna" []

• The birds of a specific region or period. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The avifauna is well represented in the area with more 500 species."
• "The avifauna is very diverse, reflecting the diversity of topographic and climatic conditions and a number of rare and endemic bird species occur, especially in the various types of forest. 72 species have been recorded as resident, but this must be a small proportion of what may exist on site."
• "The avifauna is the most diverse of any area in Australia, 270 species having been recorded."