Robin Long Legs

There were lots of people and a few birds at the feeding station in the nature reserve this morning. We had several pictures of finches and this little Robin.  As we have blipped finches fairly recently we decided to post this Robin, BUT some of the finches seemed to have some kind of fungus on their feet and so we have put them on as extras and wonder if anyone knows what this may be?
Thank you for all your kind comments on the Soap Box Derby.