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1 July 2014 Deadly Gastroliths: Eurasian Siskins Carduelis spinus Poisoned by Road Salt Grains
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Abstract

We describe a case of winter mass mortality of Eurasian Siskins Carduelis spinus caused by large road salt grains that birds apparently had mistaken for potential gizzard stones (gastroliths). Clinical evidence revealed acute salt intoxication as the cause of death. We recommend using only small-sized salt grains (<2 mm) for de-icing roads in order to save wintering birdlife from a potentially hazardous substance.

Till Töpfer, Libor Mazánek, and Stanislav Bureš "Deadly Gastroliths: Eurasian Siskins Carduelis spinus Poisoned by Road Salt Grains," Ardea 102(1), 101-104, (1 July 2014). https://doi.org/10.5253/078.102.0116
Received: 19 September 2013; Accepted: 27 March 2014; Published: 1 July 2014
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