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.