Richard Noel Holdaway is a New Zealand ornithologist. [1] With a doctorate in avian palaeobiology and systematics [2] [3] and a BSc in neurophysiology and ornithology, he has studied birds for three decades primarily in New Zealand. [4] In 2003 he received (together with Trevor Worthy) [5] the 2003 D. L. Serventy Medal [6] [7] Holdaway is director (and owner) [8] of Palaecol Research Ltd in Christchurch, New Zealand. [9] He was recognized for his findings (together with Chris Jacomb) [10] on the extinction of the New Zealand terrestrial megafauna by the University of Otago. [11] His work has also appeared in the New Zealand Journal of Zoology , [12] Nature Communications , [13] the US National Library of Medicine, National Institutes of Health and Royal Society Publishing [14] among others. [15]