Hi there!
How long has she been doing this? Are there any other symptoms? Runny nostrils, sneezing, crusty eyes, etc.? How are her feces looking? Do you see anything different about them or do they seem normal? Has she been laying eggs? If you feel around her lower belly/sides do you feel any hardness, as if maybe there is an egg in there (egg binding)? How is her crop? Is it soft to the touch or hard as a rock? Has she been eating and drinking? More information is vital to help you the best we can!