Bittern?

bookconservator@...
 

I heard a new bird sound in the yard, sort of a squonk. Then saw what looked to be a bittern in a tree. Held its head with beak up and neck extended and streaky brown, just like those I gave seen at Montezuma when I lived out there. Larger than a crow. A bit bigger than the green herons we have had in the yard by the pond. See image upper center.

Would you find a bittern in a tree and if not, any ideas on what it could be?

Thanks for the input.

Donia
Ballston Spa

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