Kestrel poi­son­ing is a big prob­lem

Bird Watching (UK) - - Your View -

In re­sponse to Kate Risely's ar­ti­cle on Kestrels (Bird Watch­ing, Jan­uary 2016) any species car­ry­ing sec­ondary poi­son­ing is vul­ner­a­ble. What hap­pens in time of food short­age is that the liver shrinks, caus­ing the per­cent­age of poi­son in­side the bird to in­crease, caus­ing death be­fore dy­ing of hunger! With 100% of the birds car­ry­ing poi­son (visit bit.ly/2ih­p8s3 on the Barn Owl Trust web­site) it’s by far a big­ger prob­lem than she makes out. As far as Goshawks, only Kielder has this prob­lem with high num­bers of both Kestrel and Goshawk in other ar­eas liv­ing to­gether. A prob­lem in Kielder is the lack of food in win­ter for the Goshawks. John Miles

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