Ladybug rings the bell just to go out and chase the birds!
We always let her out first thing in the morning around 6:30. She'll then ring the bell through out the day just because she knows the birds are out there. By the evening she know the birds are snuggled in their nest so she only rings the bell to potty and then she scratches the back door to come right back in so she can rest under my office chair ( her favorite spot).