The English plural of avifauna; multiple collections of regional or temporal bird species.
From 'avifauna' (singular noun) + regular English plural suffix '-s,' the modern and simpler plural form compared to the Latin 'avifaunae'.
Scientists comparing the avifaunas of different continents have discovered that birds evolved incredibly differently in isolation—the avifaunas of Australia and New Zealand are so unique they're like alien worlds.
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