Thaler, E, Roberts, T, St¿rkersen, ¯. R, Adams, J & Greenwood, P / April 1986 – vol. 79, issue 4, pp 210–213 Escapes? Some years ago, Derek Goodwin and the late Derrick England published some long comments on the problem for birdwatchers of escaped cage birds (Brit. Birds49: 339-349; 67: 177-197). Since those papers, a new generation of birders has appeared, to whom the origin of stray rarities is often of considerable interest. Some points stressed to me by Derrick England in conversation are, I believe... This article is only available to registered users.To read more, please log in or purchase a subscription.