Razorbill can be seen in varying numbers throughout the year irrespective of wind condtions; the species is least likely to be seen in September. As for Common Guillemot the largest numbers can be seen in February.  

The blue line shows number of visits, the orange one the number of visits when Razorbill 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

Maximum: 20++





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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