It was not until 1992 that a research paper published in a scientific journal confirmed the existence of poisonous birds in the world. Guanlin (shellfish) (ostrich) discovered by ornithologists at the University of Chicago in Papua New Guinea, an Oceania country, is a highly toxic bird. Guanlin (shellfish) (ostrich) is a kind of songbird, belonging to passeriformes. Its body length is about 30 cm, its head is crowned with feathers, its abdomen and back are bright orange, and its wings, chest, tail and head are black. Because it smells fat and sour, the locals call it "garbage bird" in disgust.

Surprisingly, there is a poisonous toxin similar to venom in its skin and beautiful feathers. Scientists' experiments show that this toxin can control the spasm and numbness of the central nervous system of animals, and eventually lead to respiratory paralysis and death. Scientists extracted 10 mg of toxin from the leachate of the skin and feathers of this poisonous bird and fed it to a mouse. As a result, the mouse died in just 20 minutes. At present, scientists do not know whether the toxins in the crown forest (shellfish) (ostrich) are synthesized by birds themselves or accumulated from the food they eat.