Organophosphate poisoning of hyacinth macaws in the southern Pantanal, Brazil

In his article on the fate of the world’s most majestic macaw David Waugh referred to a recent paper by E.C.Vicente and Neiva Guedes on the effects of organophosphate poisoning of hyacinth macaws through pesticides. The paper is reproduced here . 

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This is the text of the paper on organophosphate poisoning of hyacinth macaws in the southern Pantanal  

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 " Naturam expellas furca, tamen usque recurret "

( If you drive out nature with a pitchfork, she will soon find a way back)

Horace (65-8 BC)