Toxic bird

Toxic birds are special kinds of birds that use toxins to protect themselves from animals that might want to eat them. These birds don’t make the poison themselves, but they get it from the poisonous insects and plants they eat. One example is the pitohui from Papua New Guinea, which gets a strong poison called batrachotoxin from its food and stores it in its skin and feathers.

Other toxic birds include the ifrita, the European quail, and the spur-winged goose. The spur-winged goose gets its poison from blister beetles it eats, making it unpleasant or harmful to eat. These special defenses help the birds stay safe in the wild by making predators think twice before trying to eat them.

Initial research

The first research on toxic birds was published in 1992. It discovered a special poison called homobatrachotoxin in the feathers and bodies of some birds from New Guinea, especially in birds called Pitohui and Ifrita. Before this, such poisons were only known in some frogs in Colombia. Scientists think these birds get their toxins from eating certain beetles, which are their main food source and provide the poison to help protect the birds from predators.

Use of toxins

Some birds use poison to protect themselves from predators. These birds don't make the poison themselves; instead, they get it from the insects and plants they eat. This poison helps keep birds safe from animals like snakes and birds of prey. It may also help protect their feathers from tiny bugs that could harm them.

Scientists think that this poison gives these birds an advantage, especially when they are raising their young. The poison makes it harder for bugs to land on their feathers, which saves the birds time and energy. This clever use of poison shows how nature finds ways to help animals survive.

Main article: phylogeny
Main articles: ectoparasites, sexual selection

Origins of batrachotoxins in birds

Scientists have studied what birds eat to understand where their toxins come from. They found that birds eat many insects and sometimes fruits, but these foods do not seem to contain the toxins. This makes scientists wonder if the birds make the toxins themselves or get them from somewhere else.

Some ideas suggest that birds might get these toxins from tiny living things, similar to how pufferfish get a different toxin from bacteria on their skin. The toxins are found deep inside the birds' bodies, not just on their feathers, which adds to the mystery of how they get these poisonous substances.

Main article: de novo

Further information: pufferfish, tetrodotoxin