The arctic skua is a large seabird about the size of a common gull. Arctic skuas are pirates: chasing other seabirds, such as puffins and terns, and stealing the fish they have caught. It can often be seen flying low and fast over the waves in pursuit of prey and only comes to land to breed. It is known to be very aggressive at its breeding grounds - dive-bombing anyone who gets close to the nest.
How to identify
The smaller skuas (arctic skua, the smaller long-tailed skua and the larger pomarine skua) are very similar and difficult to tell apart. Adult arctic skuas have two colour phases: a light phase with a white belly and dark back and cap and a dark phase which is uniformly dusky brown. Arctic skuas have two pointed central tail feathers that stick out beyond their main tail and broad white 'flashes' on the underside of the wings.
Where to find it
Nests on moorlands on Scottish islands and in the far north of Scotland: seen around the coasts during spring and autumn migration.
When to find it
How can people help
The survival of seabirds like the arctic Ssua is threatened by the pollution, overexploitation and degradation of our marine and coastal habitats. The Wildlife Trusts are working with fishermen, researchers, politicians and local people towards a vision of 'Living Seas' where marine wildlife thrives. This work has recently had a massive boost with the passing of the Marine Bill, promising sustainable development of the UK's marine environment. Do your bit for our Living Seas by supporting your local Wildlife Trust.