Is this a chrysalis? On the side of a flat rock (temporarily rotated upwards for the picture)
Two nestlings in the nest. The one on the left has its mouth agape and the one to the right has its mouth closed. One adult was seen on the nest and one, perhaps the same one, was observed flying up to the nest and feeding a nestling, and then flying back down. As we were leaving an adult was perched on the barn roof. Note that the silo wall is obscuring about half of the nest, so an adult may be on the other half and not visible. This is the reason for the uncertainty as to whether there were two adults observed or just one.