I noticed a week or so ago that Hawk had little scabs all over his back. Today they seemed pretty big and I checked the other horses and Lucky had some on her back.. but not as many as Hawk. Splash only had 3 or 4. They are all over the top of his back and butt. Most all of them are on the left side. I'm not sure what they are.. they could be rain rot, possibly? It's been warm (in the 60's) the past week or so. And we had quite a bit of rain about a week or two ago. I tried to take some pictures of it but its kind of hard to see.. you can feel it alot better. What do you guys think it could be?
Here is a video of his back..