A little while later Charlotte and Myself set out to find this nest as she did a story for the french newspaper L'Express du Pacifique. After a bit of investigation we located the their hang out spot a few hundred meters away from the Burnaby Costco (a bulk shopping outlet chain). It was really impressive, masses of crows all perched on leafless trees, squawking and shouting. As soon as one crow would get uneasy with us, all of the crows would take off suddenly, creating what seemed to be a huge chaos loop and just as quickly as it all began it ended as they somewhat neatly re-shelved themselves into the trees around us. Why they chose this specific spot as their home base, I'm not sure, They clearly seem to enjoy the safety and community of being in a large groups. All I know is that it was really great to sit and watch the birds as the afternoon light faded.
The End.