" A N T I N G " BY B I R D S S I R S , -- T h e announcement by the Editors of British Birds (antea, vol. xlvii, p p . 312-313), based on the work of H . Poulsen, that " a n t i n g " by birds is "quite a u t o m a t i c " and is merely performed to rub off formic acid or any other irritant from the head is likely to be taken as an ex-cathedra pronouncement by many who have not closely observed this beh...

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