I don't know what that bird foot clue was, or how I managed to grab an egg out of a bird's nest that wasn't even there. I just got it somehow when I clicked the bird's leg thinking I had to click the leg corresponding to each direction in the clue. I clicked the right leg and an egg that I definitely wasn't visible became mine for the keeping. Did I miss something? Did I use the bird feet clue without realizing it? Was the egg just glitched?