Oystercatcher's are notoriously shy, and I rarely get any chance with them. However I was able to sneak up on a bird feeding on the golf course at Falsterbo by using a small pine tree as cover - you could not make this up, the tree was barely bigger than I am. I hid behind the tree for a while, and waited for the bird to exit on one side or the other, but not be obscured by long grass. It chose the side with the longest grass, naturally, and so I had to show my hand and shuffle left, at which point I had roughly 5 seconds of the bird in range as it looked up, freaked out, and then waddled away as quickly as it could. Didn't fly though, but I had enough, and there were no more elements of cover where the bird was headed.