https://marksissonphoto.co.uk/tag/great-skua/
Great Skua – Mark Sisson Photography
great skuamark sissonphotography
https://swiftandtit.com/birds/great-skua/
Great Skua | 燕雀之誌
Great Skua（Great Skua，Stercorarius skua），賊鷗科。首次記錄於 2022/6/17，Cottascarth and Rendall Moss RSPB Reserve。
great skua
https://www.pure.fo/en/activities/long-term-trends-of-egg-sizes-of-three-seabirds-and-spatial-varia/
Long-term trends of egg sizes of three seabirds and spatial variation of Great skua eggs - PURE...
long termegg sizesgreat skuatrendsthree
https://www.assyntwildlife.org.uk/sightings/great-skua-8/
Great Skua - Assynt Field Club
ten in total either on or following local creel boat off Culkein Stoer (DAH)
great skuafield clubassynt