There is a bird in my yard that is bald, what is wrong with it?

A bird that is missing feathers is generally very unwell. If it is a parrot, then chances are it is suffering from a very nasty disease – Psittacine beak and feather disease. You can read up about this disease here.

If you have a bird bath or feeder and there is an infected bird around then it is best to remove this resource for a while and make sure it is thoroughly cleaned.  In most cases nature will take its course but if the bird is able to be caught safely (and with minimal stress for the bird), contact a wildlife carer or take it to a vet to be euthanised humanely.