Yellow-legged Gull?

7th. I'm dubious about this report at Powfoot. YLG has a grey mantle btwn Herring & LBB AFAIK. So not light grey. Also dubious because there's a confirmatory reliance upon Merlin for ID. "Light grey, yellow legs, large gull. Sound confirmed by Merlin. At least two, possibly four." Needs checking out IMO but given the report is for the 7th, possibly moved on.