It is generally quiet except for some twittering, tweeting, and whistling communication sounds. When feeding and socializing in large groups they make twittering and chattering noises. The bird has various twittering and buzzing calls. These might be described as growls, howls or screams and bleating and twittering. Middle English also has the verb meaning "to chatter," or "twittering," deriving from Old French. Juvenile barking owls have a twittering, insect like call when begging for food. Mothers seem to comfort the young by softly vocalizing, with the young twittering in response. He has taken up blogging on sustainable development and twittering. It is spring and all the little birds are twittering in the tree tops. The twittering swallows gather for departure, leaving the fields bare. The calls emitted while feeding are soft and twittering. The complex song is a loud, sustained twittering. The typical song of swallows is a simple, sometimes musical twittering. The song varies between a dry twittering and a more varied and imitative melody. Noise reduction usually results in unwanted artifacts, sometimes referred to as "twittering" or "birdies".