I have a Blue Jay with only her bottom beak. She shovels seed onto her beak by putting her head sideways. Since the baby jays are now feeding out of the bird feeder I have noticed one that also has only the bottom beak. I tried to find information out on the internet but have drawn a blank. Can anyone help? Does this happen often or is it rare? I was concerned she wouldn’t survive the winter but she eats as much as any of them.