Summer
visitor and sporadic breeding resident, common passage migrant and occasional
winter visitor.
There are occasional records of between 1 and 10 breeding pairs dating
back to the first in the 1930s, when 6 pairs were reported up until 1939
(Jackson, 1966). Twenty pairs were reported as holding territory in 2005.
On passage numbers usually peak in March and August - October. Maximum
counts include, 75 on