As Hugh correctly guessed the hidden bill was indeed a big clue. Here's that bill revealed.
Patrick got the correct genus but was thrown off track by my sneakily not identifying the location it was taken. This was actually a shot from last year's trip back to the UK which means we're dealing with the Eurasian Curlew. This was one of 4 or 5 working the grass around Gibraltar Point's freshwater pools. The highlight of the trip back for me though was suddenly noticing a huge flock of curlew working a field on the side of a norfolk road. I reckon Curlew are one of those birds that are relatively easy to find and yet neither I nor my father had ever seen more than one or two at once so seeing a big flock of these impressive birds was a real treat.