I'm not sure where to post this, but I thought this might be a good start.......... I have a friend who had a hawk nest in a tree over her house. They had a bad storm and the whole thing came down. Several of the eggs were broken and the chicks were dead. They were probably 2 weeks away from hatching. Question! How long can an egg be in, say, 50-lower 60 degree weather, before it can no longer survive? This egg has been outside for about 10 hours before she found it. She's going to try to find an incubator for it, but if you think its been too long without warmth, she probably won't try to save it. I realize there's a difference between chickens and hawks.............but your knowledge might help a bit. Thanks!