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Re: Sinornithosaurus venom



 I was surprised that Gong et al didn't mention the five extant
 species of poisonous birds, the Pitohuis, the Ifrita, and the Rufous
 Shrike - Thrush. Pitohui, apparently, takes up batrachotoxin by
 feeding on toxic beetles. The toxin is shed in the powder down, and
 it can apparently cause contact dermatitis just by handling the
 feathers.

 At least these are examples of archosaurs that secrete poison.

 http://www.sciencemag.org/cgi/content/abstract/258/5083/799

Well, they secrete it, but they don't produce it -- as some of the "papers that cite this article" show. They take it up from their food and deposit it in their feathers, skin, and elsewhere -- just like the frogs do that use the exact same poisons.