- You need more details about that. Sometimes they play, sometimes they argue about taking their favorite spot. Or even a serious fight during the breeding season. If you notice a serious fight where they hurt each other you should separate them.
- Do you mean nature behavior? Female budgies are more territorial and aggressive during the breeding season. Females are some kind of boss of their cage and they really love to chew everything 🙂
AlenAxp Answered question