• zvifaunal,
• svifaunal,
• wvifaunal,
• qvifaunal,
• acifaunal,
• abifaunal,
• agifaunal,
• afifaunal,
• avufaunal,
• avjfaunal,
• avkfaunal,
• avifuanal,
• avifanual,
• avifauanl,
• avifaunla,
• aviifaunal,
• avifaunil,
• Aivifaunal,
• Avifaounl,
• Avifunual

• avifaunistic,
• avifauna.

The adjective form of "avifaunal" is "avifaunal". The word already functions as an adjective to describe something related to avifauna, which refers to the bird species found in a particular region or habitat.

The plural form of the word "avifaunal" is "avifaunas".

The singular form of the word "avifaunal" is "avifaunum". However, it is more commonly used as an uncountable noun.