Weebill

Australia's smallest bird, this tiny warbler moves in constant, restless flocks through the outer foliage of eucalypt canopies, gleaning insects almost too fast to follow with binoculars. Its thin, high-pitched trilling call is often the first clue to its presence, carrying from the treetops well before the bird itself is spotted. It is present year-round across much of its range, so any season with active foliage works, though breeding-season activity in spring makes flocks more vocal.