Stercorarius

Birds of prey such as snowy owls, short-eared owls (Asio flammeus), jaegers (skuas – Stercorarius spp.), and rough-legged buzzards (Buteo lagopus) are lemming and vole specialists that are only able to breed at peak lemming densities and which aggregate in areas with high lemming densities.

Effects of changes in climate and UV radiation levels on structure of arctic ecosystems in the short and long term 2009

Birds visiting the area include Brent goose Branta bernicla, common eider Somateria mollissima, red-breasted merganser Mergus serrator, pomarine skua Stercorarius pomarinus, Arctic skua Stercorarius parasiticus, Arctic tern Sterna paradisaea and Brünnich's guillemot Uria lomvia.

Ilulissat Icefjord, Denmark-Greenland 2008

The Sea-hen, the Southern Skua (_Stercorarius antarcticus_).

Three Years in Tristan da Cunha Katherine Mary Barrow

Notable exceptions to food resource generalism are lemming predators (e.g., least weasels – Mustela nivalis, and several owls – Asio, Nyctea spp., raptors – Buteo spp., and skuas – Stercorarius spp.) and a number of host-specific phytophagous insects (e.g., aphids – Acyrthosiphon spp. and sawflies – Symphyta).

General characteristics of arctic species and their adaptations in the context of changes in climate and ultraviolet-B radiation levels 2009