The monarch butterfly makes its home in fields and meadows across North America. This insect is about 10 centimeters from wingtip to wingtip. Living there is not easy, but the monarch butterfly's body and habits are a good match for it.
One reason the monarch butterfly survives is bright orange and black wings, which warn birds that it tastes bad. It also has a long, straw-like mouth called a proboscis, which lets it sip nectar from deep inside flowers.
The monarch butterfly is a herbivore, which means it is an animal that eats only plants. Its food includes flower nectar and milkweed leaves. To find food, it flies up to 4,000 kilometers south to Mexico each autumn.
Young monarch butterflies are called caterpillars. Caterpillars eat only milkweed, which makes their bodies poisonous to birds. Millions of monarchs spend the winter clustered together on the same trees in the mountains of Mexico.