Animal genetic resources for food and agriculture crop and livestock species in the early neolithic time period changed our human evolution and lifestyles. This ability to control food production led to major demographic, technological, political and military changes. Consecutively, thousands of years of natural and human selection, genetic drift, inbreeding, and crossbreeding have contributed to the diversification of animal genetic resources and increased the variety of environments and production systems that livestock keeping takes place. Relatively few species have been domesticated; out of the world's 148 non-carnivorous species weighing more than 45 kg, only 15 have been successfully domesticated. The proportion of domesticated birds used for food
The Birds of the District of Geelong, Australia The Birds of the District of Geelong, Australia The Birds of the District of Geelong, Australia is a book published in 1914 by W.J. Griffiths in Geelong, Victoria, Australia. Authored by Charles Frederic Belcher, it was published in octavo format (225 x 144 mm), containing 414 pages bound in navy blue buckram. It is illustrated with numerous black-and-white photographic plates. It contains a systematic list of 244 bird species known to occur within a radius of from the city of Geelong, south-west of Melbourne on the western side of Port Phillip Bay, followed by largely personal reminiscences on the birdlife.