The diffuse head markings on the gliding gull in last month's mystery photograph are clearly those of one of the hooded species in winter plumage. The massive Great Black-headed Gull Larus ichthyaetus is instantly ruled out at least by the much too gentle headstructure. The only other hooded species are small or medium-sized, in which case the all-white tail indicates a second-year or adu
...This article is only available to registered users.
To read more, please log in or purchase a subscription.
