Hooded Pitohui perched on a branch New Guinea ; It is the only known species of poisonous bird, and in fact poisonous. Its skin secretes a powerful poison (a neurotoxine), whose its feathers are impregnated. The strongest toxin concentrations are found in the ventral plumage. Thus the bird, while rubbing on the nest, deposits there the toxins which will protect its brooded the predatory ones. Roof of effectiveness, this chemical weapon would make also flee of the parasites. ?[AT]