Woodpecker holes?

Woodpecker holes?

Observation - Woodpecker holes?. Description: The branches of this oak tree were covered with series of holes. There were no random single holes, just many series of regular holes. Were they from a woodpecker or something else? Other nearby oaks did not seem to be affected

The branches of this oak tree were covered with series of holes. There were no random single holes, just many series of regular holes. Were they from a woodpecker or something else?
Other nearby oaks did not seem to be affected