Yes, a budgie can die without a companion because they are social creatures and need interaction to thrive. In the wild, budgies live in flocks of up to 100 birds and rely on each other for companionship, safety, and food. When kept as pets, budgies should always be housed with at least one other budgie so that they can interact and socialize.
Without a companion, a budgie may become lonely, depressed, and withdrawn. They may stop singing, lose their appetite, and become lethargic. In severe cases, a budgie may even self-mutilate or die from stress. Therefore, it is important to provide budgies with companionship to ensure their physical and mental well-being.