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 Handbook of Australian Sea-birds into their habits, and the problem of their conservation. The second part (Section V) of the book summarises what is known to date of the different species of birds in our region. Where there are adequate data each bird is described under the heads: Field Characteristics and General Habits; Status in Australia; Migration; Voice; Display; Breeding; Enemies and Mortality; Breeding Distribution.” The Handbook of Australian Sea-birds The Handbook of Australian Sea-birds is a book published in 1971 by A.H. & A.W. Reed in Sydney. It was authored by Dominic Serventy, his brother Vincent Serventy, and John Warham. It is in