I have a Fancy pigeon chick that is about 3-4 months old, not really sore how old it is. But i brought the chick in yesterday as it didn't look well. It looks unwell, and one if keeps going closed for about 10-15 seconds then opens then a while later it closes again for about 10-15 seconds. The chick is lively but clumsy/ unsteady. Does anyone know if it could have a illness or disease? If so what could it be?