greyish sac(cyst) hanging from rear of parrot (large)
by mike astle
(wanniassa act australia)
had bird for more than 20 years.it developed sac about 10 years ago.asked vet if he knew anything about them.just shook his head.doesn't worry bird(sulphur crested cockatoo)at all.has large cage and appears very happy,but have always wondered what it may be,and if any way to reduce size of sac(cyst).
mike astle