What made this hole in my white oak?

[EarthySpirit]

I'm thinking maybe woodpecker or sapsucker, but it looks so carefully made. What do you all think? thanks.

 

[cavey]

I'm guessing its not your first time out tapping maple trees, right?? lol so....................12 gauge slug..... or just a woodpecker. Woodpecker is my bet, keeping it simple.

 

[Catscratch]

Is it squared off some? Pileated wood peckers are known to make square holes.

 

[Telemark]

Woodpecker. Probably pileated.

 

[JFK52]

Agree with the pileated woodpecker answer. I have dead trees on my land that have piles of wood chips at their bases due to the work of the wood peckers.

 

[Wild Thing]

It is amazing how those woodpeckers know when there is a hollow spot in an otherwise perfectly healthy looking tree!