Arctic Skua - Age and morph

Stercorarius parasiticus

Age and or morph was recorded for the bulk of the Arctic Skuas seen at Strumble Head between 1980 and 2006. Adults made up 67 % of the total, of which 31 % were light–phase, 33 % dark–phase and 3 % classified as intermediates, the remaining 33 % of the total were predominantly juveniles, though some first and second year birds were identified.

Graham Rees.

(Covers records up to and including 2007).