Answer: avifauna

AnswerCrossword Clue
AVIFAUNABird life
AVIFAUNAWhat bird watchers watch.
AVIFAUNAOrnis
AVIFAUNABirds of a region
AVIFAUNAOrnithologist's concern
avifaunathe birds of a given region, considered as a whole
avifaunathe bird life of a particular region