Over the years, some birds have died from a dreaded disease called PDD, or proventricular dilatation disease. It was first noticed in macaws that could not properly digest their food. In some other species, like greys and cockatoos, it caused neurological problems. It is a mysterious disease that we do not thoroughly understand. It is still not completely explainable. And anything inexplicable can leave us feeling concerned, afraid, and even irrational at times.
What some researchers thought in 2010: ABV = PDD
In 2010, a major research project declared that the cause of PDD was the avian bornavirus (ABV). It said ABV = PDD. That’s a very declarative statement! So, at last we thought we knew the answer and could finally cope with the perplexing PDD challenge, saving our birds from future harm. Unfortunately, this “answer” caused many bird owners and veterinarians to rush to judgment, even euthanizing birds that tested positive for ABV.
What some researchers think now: ABV does not always, or even often, mean PDD
Now we have come to learn that many birds are ABV positive, and most never succumb to PDD. Then there are those birds that die of PDD, confirmed on necropsy, but they are ABV negative. What are we to think? What are we to do? Yes, ABV can be an important component in causing PDD, but an ABV positive bird is not automatically doomed to contract PDD, and in most cases they do not.
How might ABV be spread?
Some veterinarians believe that birds are born with ABV, passing it through the egg; or that birds possibly acquire ABV through the exchange of fluids during mating. Sounds kind of like HIV, right? ABV and HIV are both auto-immune diseases.
As a person who strives to make sure that birds have a succession of good homes, here is my concern — do we need to worry about ABV positive birds? It is my personal opinion that we do not – assuming that the bird is otherwise healthy and thriving. We have asked many veterinarians this question over the years, and most agree that an otherwise healthy bird can be re-homed without reservation.
Tips to promote overall health for our birds, and prevent disease
Avian bornavirus, like many other disease challenges in our environment, can certainly place extra stress on a bird. If a bird is sick for unknown reasons, testing for ABV might be a valuable piece of diagnostic knowledge. However, there are other things we can do to prevent many diseases, and in my opinion, these are equally important!
An environment that can contribute to physical and mental health. Used with permission from naturalinspirationsparrotcages.com
- We can make sure the quality-of-life we provide parrots in captivity includes ample space to move, explore, and exercise.
- We can provide access to nutritious food and not crappy seed from the big box store.
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Does NOT lead to good health
We can make sure our bird sees a true avian veterinarian on a regular basis – and receives the labs and gram stains that help give us early information about disease.
- And we can learn how to live with a parrot without expectations of inappropriate touching, over-stressing environments, or unnecessary insecurities.
Support more ABV and PDD research
Meanwhile, we whole-heartedly applaud the continued efforts of the veterinary and scientific community to research both diseases; to understand more definitively what their connections might be; and to encourage balance and reason about both potential problems with their clients. Birds do not need to die when they are not truly suffering from a disease, so let’s be careful not to overreact.
You can learn more about both PDD and avian bornavirus from Dr. Susan Orosz, PhD, DVM, DABVP (Avian), DECZM (Avian) here: https://lafeber.com/pet-birds/unraveling-the-puzzle-of-avian-bornavirus-pdd/ and here http://www.birdandexotics.com/medical-news.pml
Stay tuned for our next blog post about a bird that was diagnosed and presumed sick because of avian bornavirus, and as a consequence its heart disease diagnosis was totally missed! by Ann Brooks
Radiograph image source
For the last four days of my visit, we hosted parrot care classes for Trinidad residents and veterinary office staff. Well over 130 people attended! Although there is still some confusion about very old laws regarding parrots kept in homes, there is definitely a desire by the local people to acquire more information about how to care for their birds. We applaud their determination to make sure their companion birds thrive! We also hope that Bernadette Plair and her colleagues will continue to be successful in sustaining and growing the wild macaw population on Trinidad as well. They are working hard to inspire and educate the public about this conservation effort. We are so impressed with their success so far!
On the last day we visited the Nariva Swamp to observe macaws that had been reintroduced into their native habitat. It was very fulfilling to see them flying free, but also sadly poignant knowing that the macaws in our homes will never fly free nor ever speak their native language.
Over the years, as Kevin became more involved with Phoenix Landing, we felt like his lucky adopted family. We went on ecotour vacations together, many of which he had adeptly organized. Beginning in 2010, we spent several weekends a year teaching intense training “Step-Up” workshops. Kevin never missed one of these workshops, because he so enjoyed the time with new students and old friends.
When in doubt, we would say “let’s ask Kevin” because he usually had a new and insightful idea. As a highly successful businessman, Kevin joined the Board of Directors as our Treasurer and he knew how to steer the organization solidly into the future. Lastly, Kevin took stunning photographs of amazing wild and captive parrots, something that gave him great joy and satisfaction. His love for birds just radiates through these photos.
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