Collared Sparrowhawk - specific name

[Andrew Hobbs <>]

I intended to add to my last post that I thought possibly that 
originally Vieillot, who named it, considered that it did have a slender 
head.  However subsequent authors took the zoological term literally 
meaning thin and wispy and decided he must have meant orange coloured 
(which it doesn't seem to have as far as I can tell from my several bird 
guides.  An orange neck perhaps but not head). (Most authors of that era 
I would think were likely to be fluent in both Greek and Latin)
In any case as the original species name it should have precedence.

Cheers

Andrew
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