Saturday, 5 May 2012
Gull conundrum - any comments welcome.
Some 500 large gulls (+ a single Common Gull) were in fields between Abergwyngregin and Aberogwen following a plough. This presumed 2cy bird was interesting, however I can't see anything other than an early (or very late) moulting Herring Gull. The bird was darker than all the other 2cy birds, at a different stage of moult and was large ( I don't recall having seen primary moult this early before). Could it be a very late moulting 1st year 'argentatus' Herring Gull? Surely primary moult this early would point to southern origin? Interesting, but perhaps not interesting enough to be a goodie. Any comments at all would be good.