Senior Research Associate, Cambridge University Dept of  Zoology,  the Conservation Sciences Group. Nigel Collar has worked with Bird Life International since 1981 and has consulted  in the Bird Life International Red List of endangered parrot species.Throughout his 25 years with BirdLife, he has worked on the documentation and conservation of threatened birds, writing the international Red Data Book, which so far has resulted in three large volumes, for Africa, the Americas and Asia. He has served BirdLife as Director of Science, Director of Development and Deputy Director, and now works as Leventis Fellow in Conservation Biology, a position part-shared with Cambridge University. He currently has PhD students in Cambodia and the Philippines, but his research interests extend to all tropical areas where threatened birds are in need of study. His particular interest in parrots stems from the time 10 years ago when he was asked to contribute the parrot family to the “Handbook of the Birds of the World”.