Tweets,

Received a call from a gentleman who has worked at St. George's School on
Vancouver's westside for 20 years. He has noticed that 40 - 60 of the
Great Blue Herons that usually roost in Pacific Spirit Park have started to
roost in trees N of the school, at the edge of Camosen Bog. He was
wondering whether disturbance of their usual roost site in the Park might
have caused this change of behaviour.

Anyone able to shed light on this?

Might there be reasons for the change other than disturbance of their usual
roost site? If so, what?

Regards,

John Chandler
Alandale Training Corporation
Richmond, BC, Canada
Phone: 604-274-8777
email: chandler at uniserve.com