This book is available in PDF format as well:
It is amazing to think that over several years more than 100 species of bird were seen and photographed on one 40 hectare (100 acre) farm in Caledon, Ontario. In spite of the sad decline of species and numbers within those species in the last half century, we have an extraordinary variety and number of these beautiful avians.
Margaret Derry uses digital technology to turn photographs into over 200 images. Following a contextualizing introduction, Douglas Derry provides a brief story of each species and its time on this farm.