July 1946 – vol. 39, issue 7–206 THE number of reports on sites occupied by Herons in 1945, which were received at the Edward Grey Institute, was 137, or 26 more than in the previous year. This increase was mainly clue to the co-opcration of those taking part in rookery censuses, a number of whom sent in reports on heronries, several of which had not been counted since 1928. We are indebted to 66 informants, of whom a number have... This article is only available to registered users.To read more, please log in or purchase a subscription.