The hawfinch's jaw muscles squeeze with a force like a load of 30 to 48 kg. That is enough to crack cherry, plum and even olive stones.

Garden Birds of Europe · day 6 of 7
Its jaw muscles press with a force like 30 to 48 kg, enough for cherry and plum stones.
It comes from Greek words for seed and to break.
He puffs up his feathers, droops his wings and makes a deep bow.
The male chooses the site and starts building, which is rare among these finches.
While eating and drinking it is fairly aggressive and dominant, even towards bigger birds.
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