Science is Fun Fridays!
The caterpillar larvae of the bagworm, or case moth, reinforces its cocoon as a log cabin to protect itself until becoming an adult moth. They also use needles or lichen, whatever is available.
These cases can be found attached to rocks, trees or leaves, but they are also mobile as the caterpillar continues to eat.
The caterpillar will continue to add to the case as it grows. They cut the twigs to appropriate size and then attach them with their silk.
The cases are very strong, very difficult to break open. They're also a perfect camouflage against predators.
Female moths will remain inside while the males exit their cocoon to find females. She will lay her eggs inside her case, and there they will hatch before heading out to make their own.
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