Professor Ian Newton has recently retired from the Natural Environment Research Council in the United Kingdom. He has worked for the past 40 years on the population ecology of birds, especially raptors, including a 30-year study of the Eurasian Sparrowhawk. In this time, he has published about 300 papers in the scientific literature, and seven books. The books include The population ecology of raptors (1979), Population limitation in birds (1998), and most recently The migration ecology of birds (2008). He is a past Chairman of The Royal Society for the Protection of Birds in the United Kingdom, and of The Peregrine Fund in the United States, and is that current Chairman of The British Trust for Ornithology. He is also a past President of the British Ecological Society and of the British Ornithologists’ Union.