My only pair of pigeons had two eggs. One egg hatched. I noticed early AM at feeding. I peeked in close to see the little guy. Soon after peeking in I noticed the baby laying out of the nest in the entry. I found it to be cold so I warmed it, tried to give it back to mother after coming back to life but she rejected it again. I warmed it again and tried to feed it, but it eventually died after 3 hrs. She sat on the remaining eggs for that day and at nite fall I notice she had abandoned the egg. She is a new mother. She did not really build a nest even though she had ample small twiggs and short grasses and other things she could have used. Could I have done anything?? Is sand a poor nesting material base? the egg hatched in 16 days. Is abandonment common among new mothers?? And you know I did not see the father help with setting. The nest area was a simple plank with short side walls and no bowl. I hope she tries again and I would really like to help this couple. any suggestions??