[MickaCoo] Baby pigeon found

Elizabeth and others, I just found a baby pigeon wandering around the the Daly City BART station. He can't yet fly (though he tries) but he can run pretty fast! It took me a while to capture him but I did and put him in my jacket pocket and biked home. I put him in my loft for now, and he went into hiding behind the nest boxes. Will he be fine in the loft, or should I place him in a box with heating mat? Can they eat on their own at this age/size already? Can I expect the other birds to be aggressive towards him? How long until he is able to fend for himself and can he be released then? Thanks, Barna