avifaunal vs avifauna
avifauna vs avifaunalavifaunal is not a noun while avifauna is a noun.
avifaunal is an adjective but avifauna is not an adjective.
| avifaunal (noun) | avifauna (noun) |
|---|---|
| the birds of a particular region or period |
| avifaunal (adjective) | avifauna (adjective) |
|---|---|
| of or relating to birds of a particular region or period |
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