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Files in this Data Supplement:
Movie 1. The head capsule of an Antheraea polyphemus caterpillar is pinched with forceps, simulating the attack of an avian predator. Upon each attack, the caterpillar produces clicking sounds with its mandibles. Following the second attack, the caterpillar regurgitates.
Movie 2. An Antheraea polyphemus caterpillar, holding onto the stem of its host plant, which is taped to a styrofoam platform, is attacked by a young chicken. Upon attack, the caterpillar produces clicking sounds with its mandibles, and simultaneously regurgitates.
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