What episode did this happen? Did it happen at all?

She threw bread on the ground in the episode where she starts preschool. They had a pet bird at the preschool and she opened the cage so the bird could join them for story time. The bird flew out the window. She tried to get the bird to come back by throwing out whole pieces of bread in her backyard. So, basically she threw a loaf of bread on the ground when throwing out the slices for the bird.