Oystercatcher with long curved bill?

Hi,

I am rather new to this so apologies if its a silly question.

This afternoon I was walking at Titchfield Haven on the south coast.  It was a lovely cold afternoon with the tide out and there were lots of Oystercatchers foraging around the low tide line.  I noticed one solitary bird foraging along the high tide line.  It had all the markings of an Oystercatcher: black and white body, white winter collar, white shoulder patch, white belly, orange bill with a black tip.  The thing that confused me was its bill was very long and down curved like a Curlew.  Do Oystercatchers occasionally have bill anomalies like this, or is it a different bird altogether?

I am sorry for the photo quality.  I only have my camera phone. 

Many thanks!