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[23 Dec 12: 13:20]
Inbox zero! I don't even remember the last time I could say that!

[06 Aug 12: 14:21]
Phew! Done with nine 20min oral exams, three more to go. To be continued tomorrow...

[14 Oct 11: 11:45]
Just received an email from a computer science student - with an AOL email address?

[03 Jul 11: 22:26]
Google citation alerts suck: I just found out by accident I rolled over h-index of 13 and 500 citations

[21 May 11: 18:14]
6.15pm: Does god have Alzheimer? No #rapture in Europe...

[01 May 11: 11:31]
w00t! Just been invited to present at OKCon 2011! #OKCon2011


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There's a new paper out by the group of Nicky Clayton, Cambridge, in the April 4 issue of Current Biology. I know Nicky from the Social Science Research Council sponsored workshop "Behavioral Organization in Animals" in Bodega Bay (see program).
In their study, the researchers used the popular trap-tube task to assay the extent of physical cognition (specifically, an understanding of the operation of gravity) in rooks. In the experiment, food is placed inside a horizontal tube which has a vertical, blind-ended tube attached to it. The animals had to push (or pull) the item from the appropriate end of the tube using a stick, so that they do not lose the item in the trap. Seven out of eight rooks learned the task and all seven passed a transfer test, in which the food had to be dropped into the trap to be accessible (see picture).

The authors hypothesize that the rooks have a sense of gravity ("physical cognition") and may use learning to abstract rules to acquire it.
There was a fairly recent (2002) report in the journal Science by Weir, Chappell and Kacelnik, who showed that New Caledonian crows are able to shape unfamiliar materials to create a usable tool for a specific task.
These corvids don't have birdbrains, it seems
Posted on Tuesday 04 April 2006 - 15:59:49 comment: 0

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