this morning i saw the dogs nosing around under the bird house, ran over there and sure enough, there were two baby birds on the ground. one was very dead, the other seemed ok. i scooped up the living one, hubs grabbed the ladder, and i tucked it back into the bird house. it took the final step back into the nest by itself. the mom bird was very upset, below. what could have happened? a raider? heat too much? sibling rivalry in the nest? now i see there is one baby bird cheeping for food, and i'm not sure if it is the one i put back or not, or what happened to the third baby.