One of the problems the birds are having to contend with (in addition to the wind of course!) is that the wind in downtown Winnipeg gets spun about in the canyons formed by the buildings. If the birds were in the nestbox, it would be windy, but not from every direction. In fact, we made the new box deeper, so Princess could have been entirely or almost entirely protected from the wind while brooding. Sometimes it just makes me want to scream!!!