Sadly...the records show that this is not very likely. Common Gull is, in the main, an occasional winter visitor - with maximum annual numbers in recent years being around 45 birds in the late 1990s. The last half of December and first half of January appear to be the best time to see this gull in Guernsey.
This year with unusually cold weather across much of northern and western Europe I thought we would have a bumper month in January...but this really doesn't appear to have been the case. Certainly there were a few records of up to six - eight birds, but no big flocks and they were not spread over the island.
Fortunately Phil Alexander spotted a group of half a dozen birds at Rue des Frances (where last year a Ring-billed Gull was found)...and managed to obtain some nice photos.
Adult (top) and 1st Winter (bottom two) Common Gulls, St Saviour's, Guernsey - January 2010 - Phil Alexander