What is That Orange Stuff?

Today was pretty close to being a non photography day. I finished up the first edit of the book and sent it off to the publisher. Following that I went out to the Burris Ranch and set up a couple more bird feeders and did some clean up around the photoblind. I was excited to to see that the western Bluebirds were checking out the nest boxes. One of the other boxes already had some Tree Swallows in residence.On the trip home I stopped to photograph some Blacktail Deer. On a closer look one of the deer had a swollen face and what appeared to be some sort of orange scarring on its face. I've never seen anything like it before. God's light and love to all, chris Photographed with a Canon 7D and a Canon 100-400 IS USM lens