This image, shot by a photographer unknown to me, allegedly shows a wryneck (Jynx torquilla) pecking away at a tree branch. The head looks like a spindle, doesn't it?
-via TYWKIWDBI
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"These birds get their English name from their ability to turn their heads almost 180 degrees. When disturbed at the nest, they use this snake-like head twisting and hissing as a threat display. This odd behaviour led to their use in witchcraft, hence to put a "jinx" on someone."
Thus, it is a threat display and not food searching.