"Bonxies" are regular in small numbers during the spring migration with birds seen as early as mid April. Numbers tend to increase gradually during the summer, though most records in June and early July are not of migrating birds as such. The main southerly migration occurs in late July / early August - usually in periods of calm weather.

It would seem that this species is noted in larger numbers at Utsira than at Skogsøy, especially during the autumn. Interesting considering the occurrence patterns of the other skuas....

The blue line shows number of visits, the orange one the number of visits when Great Skua have been recorded and the green one (numbers on right hand axis) shows the average numbers I have recorded in any three day period.

For further details click here

Number of Great Skua observed by week number (artsobs)

Maximum: 25, 27 July 2003




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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