I have a beautiful, sweet white King Pigeon that walked into a friend's house last week. They couldn't keep him. I got him on Friday afternoon, 11-18-22. He started showing symptoms of PMV on Saturday. I am desperate to save him. Took him to Emergency vet yesterday. They thought I should euthanize him but I brought him back home with me after spending almost $300. Would gave been $1,000 if he spent the night! I don't know what a crop is but I'll google it. He can't eat or drink. What kind of baby food should I give him?