Johnson, W. G, Daniels, D, Brett, E. C, Bradbury, A. D, Hadrill, P, Image, B, Pennington, M. G, Vilkaitis, H, Verrall, K, Hughes, S. W. M, Fitzpatrick, J, Warren, R. B & Elkins, N / January 1990 – vol. 83, issue 1, pp 22–26 Partial albinism of Manx Shearwaters, The note on leucism and partial albinism of Manx Shearwaters Puffinus puffinus (Brit. Birds 81 : 235-236) recalled the following. On 18th June 1972, in the Strait of Gibraltar, I observed a flock of about 160 Manx Shearwaters of the race mauretanicus: one had an almost white rump and crown, while its mantle and upperwing-coverts were streaked white. On 23... This article is only available to registered users.To read more, please log in or purchase a subscription.