The boughs of the mature cedar shown in the image below on Bowen Island have started to brown on only one side, not sure exactly when it started. The boughs on the other side of the tree are green and look healthy. In spring/summer of 2016 a large fir tree about 25 feet away from the cedar on the brown side was cut down and the light and wind pattern has changed dramatically for the cedar, more afternoon sun and exposure to strong Howe Sound winds. I'm wondering whether the reason for this browning on one side is due to the light and/or wind change, or if there would be another reason. Thank you!