When I first got my budgie she didn't have a line down her stomach. She got it when she was older and I saw lines on budgies online and I think it's normal. But it looks really weird and I wanna get rid of it. My oldest budgie is 1 yr & 4 months, and he doesn't have it. It's not really a line but it's like feathers in the middle of the stomach folding in and making it look like a line. I'm wondering why it's there, and what it's there for.