I came across this ball-shaped Dunlin, (Calidris alpina) at Point Pelee. It was among a group of about 20 others who were feeding while making their way to the tundra of the far north to breed. But this Dunlin was not like the typical Dunlin like the image below. It kept itself hunched up in a ball like this but otherwise acted just like the others. Perhaps it had eggs ready to lay, or was ill, but it certainly looked different.
