Chough threat display

I haven't seen this before despite seeing Choughs almost every day in our  
part of suburban Canberra...
A small party of Choughs flew into a low tree and were immediately ambushed  
by Noisy Miners, Magpies and Currawongs. They were heavily outnumbered and  
quite stressed. Suddenly three of them lined up on a branch and fluffed  
their body feathers up, raising their wings to display their white wing  
patches. I happened to be in line of sight and it was an impressive  
transformation. The bird mobbing them were momentarily confused and the  
Choughs made their escape.
John Leonard
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www.birding-aus.org
birding-aus.blogspot.com

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