Raven stone 'fossiking'

["Peter Ridgeway" <>]

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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