June 1933 – vol. 27, issue 8–23 THE Rook (Corvus f. frugilegus) is an essential part of the English country-side. Its large size, its characteristic cawings and its habit of appearing in flocks all the year round compel attention. Although an arboreal species, so far as nesting is concerned, it is essentially a bird of agricultural land. When feeding, it almost invariably frequents farm lands at all times of the year, and, as it... This article is only available to registered users.To read more, please log in or purchase a subscription.