avi·fau·na \|āvə|fȯnə, |av-\noun (-s) Etymology: New Latin, from Latin avis bird + New Latin fauna : the birds or the kinds of birds of a region, period, or environment • avi·fau·nal\| ̷ ̷ ̷ ̷| ̷ ̷nəl\adjective • avi·fua·nal·ly\-nəlē\adverb • avi·fau·nis·tic\| ̷ ̷ ̷ ̷ ̷ ̷|nistik\adjective