HBW and BirdLife International Illustrated Checklist of the Birds of the WorldJosep del Hoyo, Nigel J. Collar · First published 2014Open the Tome
Aves de MacaronesiaEduardo Garcia del Rey, Elisabet Carreras Goicoechea, Nigel J. Collar · First published 2011Open the Tome
Facing ExtinctionPaul Donald, Nigel Collar, Stuart Marsden, Debbie Pain · First published 2010Open the Tome
Handbook of the Birds of the World – Volume 15Josep del Hoyo, Andrew Elliott, David Christie, Stuart Butchart, Nigel Collar, Alison Stattersfield, Leon Bennun · First published 2010Open the Tome
