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As far as I can see, only your original picture from 2016 shows sign of woolly adelgid. The tree is not in focus since the point of the picture was the doves, but here are some clues: The white...
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#1: Attribution notice removed
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System
·
2020-06-03T15:54:23Z (over 4 years ago)
Source: https://outdoors.stackexchange.com/a/15581 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/