-           Status: Common breeder and partial migrant

-           Residence: arrives in Jan-Feb and departures in Sep

-           Clotch size: lays 1 egg

-           Nesting place: on cliffs and rocks by the sea or inland, sometimes on rocky islands or pillars

-           The nest: shallow depression, often lined with stones or dry plant material

-           Population: 1-2 million pairs in Iceland

-           Fledging period: 49 days

-           Characteristic: Protects its nest by vomiting towards the threat.  Slow to mature, at least six years old before it starts to breed