Two Uncommon Gulls

A late visit with the sun going down and the heat of the day fading.  Firstly I checked on the two young Little Ringed Plovers and they were still being looked after by a parent and clearly growing fast.  Hopefully the worst of the danger period is past.

Then checking out the rest of the sand spit I spotted a small gull that was clearly not the usual Black-headed Gulls but a juvenile Mediterranean Gull.I assume this bird would have been raised in the country but I am not sure where the nearest breeding site is.  They certainly breed along the south coast. 
A short while later I spotted the now regular Yellow-legged Gull sat down on the sand spit.  Considering the small number of gulls present, to see two of the less common gulls was a good result.

Mediterranean Gull - This juvenile had rather a greyish plumage, a greyish hue to the face, greyish legs and a black bill.

It was seen a short while later flying off south towards the Thames.

Yellow-legged Gull - This adult was present again.  Initially sat down but later seen walking.