Photo by Barry Wallace
Gray Birch trees are fairly common in north-eastern North American and their bark has a characteristic which shows a dark triangle where branches meet the trunk. As the tree matures, many lower branches break or die off and just the black triangle remains on the whitish-gray bark. To me, these marks greatly resemble the outlines of Great Gray Owls or Northern Hawk Owls in face-on flight (see photo above).
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