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Re: SV: Rooks cooperate to get treats
Tommy Tyrberg writes:
A pair of Magpies mobbing a predator (e. g. a cat) sometimes work in a
co-ordinated manner with one bird confronting it and keeping it
distracted while the other hits it from behind. I've seen this myself.
My mother once heard a commotion in her front yard, and found three
Australian magpies locked in battle with a wedge-tailed eagle! By all
descriptions the fight wasn't all that coordinated (more an all-out brawl),
but a magpie would have to have fairly close family bonds to go into a fight
with Australia's biggest predatory bird and expect some back-up to arrive.
They all eventually separated relatively unharmed (minus the occasional
feather) - the real casualties were my mother's potted succulants and cacti
that got caught in the crossfire.
For really impressive coorperative behaviour, you can't go past a Harris
hawk hunting party. There was some really impressive footage in
Attenborough's 'Life of Birds' showing them hunting rabbits. Some birds
acted as 'flushers', others set up ambushes to capture the rabbit once it
fled cover. In the end they all shared the carcass.
GIS / Archaeologist http://geo_cities.com/dannsdinosaurs
Melbourne, Australia http://heretichides.soffiles.com