Background: Eastern tent caterpillar (Malacosoma americanum) live in groups in silk nests, or tents, typically in cherry and apple trees. They emerge early in the spring, when daily temperatures fluctuate from freezing to hot. Early in the morning, these black caterpillars rest in a tightly packed group on the east-facing surface of the tent. In mid aftemoon, the group is found on the tent undersurface, each caterpillar hanging from the tent by a few of its legs.
- Propose a hypothesis to explain this behaviour. Explain how could you test it. No word minimum or max.
Under 150 words is okay. No sources or citations needed.