I found this pigeon with a neck injury, or at least that's what it looks like. The back of his head and neck have blood on them. He's in a carrier with food and water. What exactly should I do? I've read what to do on this site, but I'm still really worried, and I don't have a heating pad. and I'm not sure if this crunching noise I hear is coming from him or the carrier, but I'm thinking it's the carrier...or at least I hope to God it is.