Oh he is not lonely(he is rarely alone), but he is very obviously sexually frustrated. There are some things we humans just can't provide. LOL I've had other parrots including another African Grey, but none have been anything near as lovesick as Bird. I've had Bird for about 7 years. I think he is 15 or 16. He's generally a happy guy, but he knows something is missing. No, I don't think all Greys are lonely, but some may need a mate more than others.