Grey-headed Gulls KZN South Africa, Sept Plumage differences (1 Viewer)

Hi,

I took these two photos of Grey-headed Gulls in St Lucia, KZN, South Africa.

One has a typical breeding plumage with red bill and legs. The other is mostly there with its grey head, but appears to retain second winter legs (orange) and a black tipped bill.

Is the orange legged one still coming through the change from second winter to adult breeding, or do some adults retain the orange legs?

Thanks very much

Any gullers out there that are willing to take a look?(Bump)