I have the information and did not know if I was allowed to share it but since you have so much already I will fill in the blanks the 4 chicks that died did not survive the horrible wind and rain storms the area had. They were happy one survived and I was told it was doing very well. The chick brought in was from the MIsrecordia nest in Edmonton. They had 4 and it was noticed at banding that one was quite small. So they thought it would do better in a nest with one other chick as it would get fed more , adn the 3 remaining ones at the MIsrecordia would get more as they grew older. And it is always good to have 2 chicks in a nest and they knew the Red Deer pair could handle it. they do this all the time, if necessary. the death of the 4 chicks was not the fault of the parents.They also put up a nest box now which should help against the elements. they were going to put one up later but the time wa right now. Hope that fills in the gaps.