replace the one siding board shown in the back and the siding boards on the side of essentially a dormer (one side shown in the second pic) and then caulking/painting the areas after replacing
The back of the house is fairly simple. 1 board to replace. I could only get a picture of 1 of the 2 upper area sides.
And not a good picture. As I said both sections need about 6 boards each and each area is about 4 feet high and 5 feet wide (at the top and then it tapers down)