Black-headed Gull do not breed in the vicinity of Skogsøy so it is easy to spot the migrants....The first birds can be seen in early March and the majority pass during April. There are two peaks to the autumn migration - one in late July / early August and another much later in the season in October / November.

It would seem that this species is noted in larger numbers at Utsira than at Skogsøy.

The blue line shows number of visits, the orange one the number of visits when Black-headed Gull have been recorded and the green one (numbers on right hand axis) shows the maximum numbers I have recorded in any three day period.

For further details click here

Maximum: 16





References
Tveit, B.O., Mobakken, G. og Bryne, O. 2004 Fugler og fuglafolk på Utsira. Utsira Fuglestasjon
Website: Fugler i Hordaland - Skogsøy i Øygarden 

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