Phillips, G. C, Owen, D. F & Owen, D. F / December 1956 – vol. 49, issue 12–499 IN late June 1956 we visited two colonies of Purple Herons (Ardea purpurea) in Holland in order to observe feeding and other behaviour for comparison with our studies in England of the Common Heron (A. cinerea). The colonies visited were at the Naardermeer reserve (10 miles S1E, of Amsterdam) and at Nieuwkoop (15 miles S . W . of the Naardermeer). At the Naardermeer we were told that there were ov... This article is only available to registered users.To read more, please log in or purchase a subscription.