1. Plural of avifauna; the birds of a particular region, period, or environment.
Usage: technical; scientific; plural form

Examples

• The avifaunae of the Amazon rainforest include hundreds of colorful species.
• Researchers studied the avifaunae of different continents to understand migration patterns.
• The island's avifaunae were significantly affected by the introduction of invasive species.
• Climate change is altering the avifaunae composition in northern regions.
• The museum's collection documents the avifaunae of the region over the past century.