Poor thing, he will need a friend, they do mourn their lost family members I’ve seen, loneliness can effect their physical health too, constant anxiety from being alone can weaken the immune system and prevent him from eating as much as he’s constantly obsessing on trying to find someone to be with.At least our Goose is doing well. At the moment he is knocking on the glass door for attention
He’s probably still recovering from his physical injuries, but he needs another goose friend to heal the psychological wounds.