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.