I agree with Bill, your heart is in the right place, however the odds of this little one hatching, living,fledging, and being returned to the outdoors are minimal at best.
the daunting task of feeding it after it hatches, is a complex one, not to mention time consuming.
I understand completely, I really do.
last summer I came across 5 swallows that had been abandoned on a boat at our local marina.
I took them home, set them up in a temporary brooder. I had them in a stainless steel dish.
I researched for hours on what to feed them. during this time, one had died, leaving me four remaining little ones, just days old. I was so stressed that I had this huge undertaking with really no idea what I was in for....and I am a breeder.
while my family enjoyed a long weekend on the boat, I was at home feeding these little mouths every 1-2 hours.
by Monday 2 more had died. I spent 5 hours, yes 5 hours on the phone trying to find a local wildlife organization who would take the remaining three. not one organization would.
Tuesday I decided to drop them off at a local vet clinic which was known for rehabilitating abandoned wildlife.
It was such a relief when I left there, knowing they were in better care than I could provide, and my life returned to normal.
Never again.
here are some pics, I took:
P1080247_zps28ade152.jpg Photo by bmckellar735 | Photobucket
P1080241_zps947ef147.jpg Photo by bmckellar735 | Photobucket
P1080248_zps2aaf3cb4.jpg Photo by bmckellar735 | Photobucket