I have been tracking them and they nested last year and the previous year on the Portlands Energy Centre stacks. This year they built multiple nests on both stacks and for a brief time there was one on a nest on the west stack. They have abandoned nesting on the stacks as far as we can make out and it appears that they are nesting west of Portlands (Hearn Station?). They have been observed by Portlands staff carrying food past the north side of the building heading west. They are flying at a much lower level than they have in past years which makes one wonder if their nest is in a tree? If anyone sees or knows anything, could you post please? Thanks. Ian.