Protection
The Vietnamese Monarch is a beautiful and poisonous butterfly. It is poisonous to all birds except two species, the Black Headed Grosbeak and the Black Beaked Orioh. The Black Headed Grosbeak is a common and a well-known bird of the American West. The Black-Headed Grosbeak can be located in mountain woods, along dry desert streams, or in your backyards. The male and female differ greatly in their feathers.
If any other animal eats them they will die after a few seconds. In this way, animals quickly learn not to eat this type of butterfly. The Monarch Butterfly gets its poison from milkweed. Milkweed is a plant that the butterflies usually eat while they are in their early stages or while they are caterpillars. When the butterfly is an adult it doesn't eat milkweed as much, it eats nectar. Another way butterflies protect themselves is by hiding under leaves. The way the Caligo Illioneus Oberon (Owl) protects itself is by flapping its wings and showing off the dots under its wings that look like eyes. Some brightly colored butterflies protect themselves by flapping their wings fast so they look like flashes.