It's really good news he is eating, that looks very promising, he looks fairly well fledged so he may have just been knocked for six by a blast of wind. It's nice to know there are people who care for creatures, so many do not, one of the biggest reasons we left Spain after just two years was the cruelty they inflict on animals, we just could not stand it, came back with two rescue cats, with three eyes between them. Good luck with pigeon.