Martin G. Birds by Night

Poyser, T. & A. D. Limited, 2010. - 240 p. ISBN13: 978-1408137710
For many people, watching and studying birds is exclusively a day time activity. However, for many birds twilight and night time are not a barrier to useful activity. It is true that very few birds are exclusively nocturnal, but many birds which are active by day also conduct limited, and often crucial, activities after dusk. This book examines many examples of the nocturnal behaviour of birds; from the occasional night feeding of wildfowl and shorebirds to the night singing and night migration of certain passerines, and from the location of nest sites by sea birds to the nocturnal foraging of owls and nightjars. The special cases of flightless nocturnal birds and those birds which dwell in lightless caves are also considered.