Egg

The female butterfly lays her eggs on the leaves of the swan plant. She often lays her eggs on the underside of the leaf to keep them safer.

A female laying an egg
A female laying an egg

She places the end of her abdomen on the leaf and pushes out the egg. It sticks to the leaf with a special kind of glue, so it doesn’t fall off, even in the rain.

Monarch butterfly eggs are tiny – only about 1mm wide.

An egg on a leaf - larger than in real life
An egg on a leaf – larger than in real life

A tiny caterpillar grows inside the egg. It takes about 4 to 10 days before the caterpillar hatches out of the egg. How long it takes mostly depends on the weather – the warmer it is, the shorter time it takes.

Learn about the caterpillar here.

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