Image of Black Swan

To: 'canberrabirds chatline' <>
Subject: Image of Black Swan
From: Philip Veerman <>
Date: Sun, 8 May 2016 23:27:39 +0000
What I wrote yesterday was correct in intention (I had the right mental image) 
but half wrong by missing out one link. So before anyone with a clearer head 
corrects me, I will. "Anatomically moving the quadrate bone forward without 
moving the palatine bone", should be: Anatomically moving the quadrate bone 
forward without moving the jugal bone forward against the palatine bone." (The 
palatine bone hardly moves at all.)


-----Original Message-----
From: Philip Veerman 
Sent: Sunday, 8 May, 2016 5:49 PM
To: 'Con Boekel'; 'canberrabirds chatline'
Subject: Image of Black Swan

Certainly a nice close photo, to which I will comment on this and other 

The serrations are normal and usually hidden when the beak is closed. I don't 
know if these structures are in the bone at all. I suspect not, (I do have a 
swan's skull in my collection and don't recall seeing this). It is likely to be 
just part of the keratin layer of the beak.  Some cartoonists like to show 
birds with teeth, Daffy Duck I think commonly. Maybe that came from pictures 
like this one. Anyone could easily say it looks like it has teeth but it does 
not, of course.

As you have noticed, there is a bit of cranial kinesis there, although in the 
reverse of what we usually see, as in it is extending the jaw hinge from the 
base (I think anatomically moving the quadrate bone forward without moving the 
palatine bone,) rather than extending the tip.

As for where to find Black Swans outside Aus. They are....... I was a bit 
surprised to see them in a botanical garden adjoining the zoo in Wuhan, China.


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