I am concerned about my horse! I just purchased him this summer so this is my 1st winter with him. He is an 8yo Standardbred gelding. I went out to feed him this morning and he was shivering. He had snow crusted on his back like it had snowed wet snow and then it froze. So when I got back inside I checked the weathernetwork an the temp. Was only -4 (feels like -11). He does have a shelter in his pasture but he does not use it instead he tends to stand next to our shop for shelter. I am currently feeding him 1/2 bale of hay per day split up into 3 feedings (6:30am, 1:30pm and 8:30pm). He came from a herd of 40. I do not believe he was blanketed before and I am sure he had regular access to food in previous winters. I have emailed his previous owner. What should I be doing to keep him warm if he is already shivering in -4? We live in Alberta, Canada and our winter days will get anywhere from -20 to - 40.