I have been taking part in upatsix cockatoo chat since late 1998. I have also been in bird clubs, and have gone to many bird fairs and met people with birds there.
I have taken notice when cockatoos die. By FAR the most common cause of death is certainly cockatoos being killed by other predatory pets. Many birds are lost because their owners forget that large dogs are extraordinarily predatory animals. One can keep their instinct in check sometimes, but there can be a lapse in the dogs training, and suddenly in a matter of seconds the bird is dead. There seems to be at LEAST one such death reported each year at Tooville and other places. The problem seems compounded dramatically when there are two large dogs. Commonly the dog has been around the bird a lot, and suddenly turns on the bird. One should NOT blame the dog, birds are naturally prey for them. Cats could be a threat, and I know many instances of cats eating smaller birds, but cockatoos are well enough armed with their beaks to defend themselves against many cats. Cat bites, however, can be fatal from infection. Ferrets are a particularly violent predator. If you have any birds and a ferret you should get rid of the ferret, or keep him in another building. Ferrets have very short normal life spans. If you have any birds you should not even think about acquiring one.
One should also remember that there are several species that are apt to be typhoid Marys. They can bring sickness and death. Patagonian conures are fantastically beautiful birds. But a substantial fraction carries Pacheco's disease. This bird is particularly devastating to Amazon parrots, a friend of mine lost over 20 Amazons to this disease a few years ago! Cockatiels are apt to carry Chlymidia psittaci, as it was formerly called. This disease can also infect humans. It is probably unwise to add a cockatiel to the flock, because the test is not at all reliable. Treatment with doxycycline for 45 to 60 days will almost certainly remove any latent infection. Budgerigars are VERY often infected with polyoma. This disease often kills young birds, but adults usually survive. When adults get the disease they have an immunity for 18 months to two years, I believe it is, and then they can get it again. Budgerigars tend to shed the organism all the time, but most other birds completely clear the infection after becoming infected. Once vets suggested killing infected birds! There is an excellent test to see if a bird is shedding virus. Do not let an uninformed vet talk you into killing your bird because it is polyoma infected!
Keep birds away from insect vectors. Roaches can be a problem, and can carry a vicious protozoan parasite from opossums. There are excellent ways to eliminate roaches these days using juvenile hormone mimics. These are non toxic to us and birds.
Keep young parrots away from other birds outside your flock at all costs. Beak and Feather disease if acquired will result in certain death for cockatoos, though macaws often can survive it. Birds over about three years old are completely immune. Another thread is proventricular dilatation disease. Birds of all ages seem to be able to acquire this disease, but it seems far more common in young birds. Some species are highly susceptible to it, others not. Macaws and African greys are FAR FAR more likely to get it than other birds. Amazons seem rather resistant. Cockatoos do not get it too often, but they do get it. This disease is still not fully understood.
Be sure that the bird has an adequate diet. Many birds die from lack of critical dietary nutrients. Wild parrots tend to eat so much carotene containing food that their blood serum is yellow! Birds and mammals can convert carotene into Vitamin A, which is critical for life. Carotene is NOT a toxic material, but excess vitamin A is. Carrots and peppers are perhaps the highest carotene containing foods.
Although seeds are decryed as bird food, they have many essential nutrients. Nuts are large seeds, and are also excellent foods. Some birds seem to need a lot of nuts and seed in their diet to stay healthy (macaws, conures) Sunflower seed is good for a PART of a diet. All birds love them. Peanuts are not bad food, but they can be contaminated with aflatoxins.
Many birds die from non infectuous liver disease. This is often caused by diet that does not enable the bird to make choline. This can be caused by lack of B12, methionine, or folic acid.
Birds often sicken and become ill from protein amino acid deficiency. Almost all human and bird amino deficiency comes from lack of lysine and methionine. Lysine deficiency is more common, but methionine deficiency can produce death. Wild birds almost always eat a few insects. Providing 5 or 10% of the diet in cooked fish or poultry will completely prevent such problems. Dairy products have a good protein ratio, but too much of the wrong ones can cause problems from the lactose. It is NOT a good idea to try to treat dairy products with products designed for human lactose intolerance, because birds have problems with the galactose that is produced by lactose hydrolysis.
I am sorry to post such a morbid post about avian death and sickness, but I hope that people will learn from it, and take steps that will save the lives of some birds.










