Hi! My husband and I have two happy, pampered rescued white pigeons who are indoors at night but we often put their cages outside on nice days so they can get some sun and entertainment watching the other wild birds that frequent our backyard. Well, all was well until I suddenly heard a loud "thump". Unfortunately I recognized the sound as a wild bird flying into a window. Well I no sooner got up to go investigate when our (indoor) Cockatiels suddenly began screaming and thrashing around their cage. So I quickened my pace and ran to the back door just in time to find a Cooper's Hawk sitting on top of the pigeon cage! Both pigeons were sitting "frozen", frightened but unharmed, and as soon as the hawk saw me it flew away. Moments later, however, I was heart-broken to find a dead mourning dove on the patio underneath the pigeon's cage... no doubt the one who flew into the nearby window trying to escape the hawk. Now, the other part of this story is that there has been a Mourning Dove incubating some eggs in her nest up on some patio furniture over the past week or so...but she is now gone. Whether it was the one who flew into the window or not, we can't be sure, but we kept an eye on the nest all evening and neither parent has returned (it's now midnight and she was usually sitting on the nest by sundown at the latest). Since it's now quite cool outside we're concerned about the abandoned egg and are wondering what we should do: Should we just leave it there over night in hopes that the parent might still return in the morning or will the chilled air kill the chick? We could try putting it in with our female Roller Pigeon, to see if she might adopt it but she's not a breeding female. In fact, she gets Depo-Lupron shots every few months to prevent her from laying, so I don't know if her maternal instinct would even kick in. Or should we take it in and try to hatch and raise it ourselves? I know it's "just an egg", and I'm probably being silly to be so concerned, but I can't just forget about it without at least trying to give it a chance at survival. Any advice?