odd bird behaviour

To: "canberrabirds" <>
Subject: odd bird behaviour
From: "Williams, Roger" <>
Date: Fri, 27 Apr 2012 16:58:39 +1000
This is an email that a friend of mine sent me, I was wondering if some body has seen this sort of behaviour before,this was observed in Canberra.

A shiny blue black raven was walking about the gravel path under casuarina trees. It was preoccupied with searching for and picking up small (25-40mm) round/elliptical quartz pebbles (which were in the minority, with most of the gravel being sharp blue stone). It then dug a hole in the gravel with its beak and buried the stone in the hole, finally covering it with casuarina needles! I watched the bird do this three times (it dug a new hole each time, not too far from where it found the stone), before I decided I really should get back to work. It didn?t seem to mind me squatting on the ground close to it watching this bizarre activity.




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