Pecking

Whack! Downy Woodpecker pounding away at a Horned Oak Gall (wasp: Callirhytis quercuscornigera) in a Pin Oak.

2 Responses to “Pecking”


  1. 1 Charles McAlexander December 7, 2021 at 7:33 am

    what is inside the gall this time of year? eggs?

    • 2 mthew December 8, 2021 at 6:19 am

      I don’t know the details of this species, but could be larvae. Another possibility is the larvae of parasitic wasps that prey on the gall-inducer.


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