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Research Update – Parrots, Like People, Use Their Tongues to Alter Vocalizations

Posted by: Frank Indiviglio in Bird Research or Recent News October 24, 2008 Comments Off on Research Update – Parrots, Like People, Use Their Tongues to Alter Vocalizations 2841 Views

 

Parrots are among the most vocally gifted of birds, and rely heavily upon complex communication skills when interacting with one another. Their vocalizations originate in the syrinx, or “voice box”, and it is from this organ that their voices’ complexities were assumed to originate. However, as bird keepers know, parrots continually bob their tongues up and down when calling or imitating speech. Wondering why parrots might do this, researchers at Indiana and Leiden (Netherlands) Universities looked closely at this behavior.

The Parrot Tongue at Work
Their work led to the discovery that the tongue’s influence on sound may be as important to parrots as it is to people…in common with us, the sound that leaves the parrot’s voice box is not that which eventually exits the mouth. Parrot tongue action is finely controlled, and variations of a fraction of a millimeter can produce sounds that differ in character as much as do the human ‘O” and “A”.

As hobbyists know, parrots are both highly intelligent and social. So, in retrospect, it makes sense that they would have evolved a means of producing complex sounds to communicate with each other. Also, they can be quite choosy (maddeningly so, to breeders!) when deciding upon a mate – perhaps the tongue’s action imprints each parrot’s voice with a distinct quality, as it does in people, and this somehow functions in mate selection.
Parallels in People
These findings have important implications for human speech and communication behavior research. In birds as in people, vocalizing is largely a learned behavior, and specific areas of the brain are involved. Studies of these areas, and how they affect the parrot’s ability to imitate human voices, may shed light on the origin and treatment of human speech maladies.

There is always something new being reported somewhere in the world of birds.

You can read more about the parallels between human and parrot (and other animal) vocal abilities at:
http://news.bbc.co.uk/2/hi/science/nature/3430481.stm

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I believe that I was born with an intense interest in animals, as neither I nor any of my family can recall a time when I was not fascinated by creatures large and small. One might imagine this to be an unfortunate set of circumstances for a person born and raised in the Bronx, but, in actuality, quite the opposite was true. Most importantly, my family encouraged both my interest and the extensive menagerie that sprung from it. My mother and grandmother somehow found ways to cope with the skunks, flying squirrels, octopus, caimans and countless other odd creatures that routinely arrived un-announced at our front door. Assisting in hand-feeding hatchling praying mantises and in eradicating hoards of mosquitoes (I once thought I had discovered “fresh-water brine shrimp” and stocked my tanks with thousands of mosquito larvae!) became second nature to them. My mother went on to become a serious naturalist, and has helped thousands learn about wildlife in her 16 years as a volunteer at the Bronx Zoo. My grandfather actively conspired in my zoo-buildings efforts, regularly appearing with chipmunks, boa constrictors, turtles rescued from the Fulton Fish Market and, especially, unusual marine creatures. It was his passion for seahorses that led me to write a book about them years later. Thank you very much, for a complete biography of my experience click here.
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