An interesting observation from colleague Phil Mulhearn:
‘In front of my apartment is a large flat roof covered with pebbles. One morning recently I observed a raven fossicking among the pebbles – surprising as there is nothing to eat there. I observed that he had a large pebble in his bill, about 15mm diameter (too big to swallow). Around the pebbled roof there is a low wall and it is very difficult to access. Yet every now and again a new pebble appears on top of it. Could the ravens be putting them there and if so why?’
Has anyone seen similar behaviour before?
Peter Ridgeway | Volunteer Coordinator| Birds Australia Discovery Centre
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