Red admiral butterflies fly in a highly irregular fashion, constantly varying their speed, wing strokes, and flight path. █████ █████████ █████ █████████ █████████ ████████ ████████████ ███████████ ████ ███ ███ ███████ ████ ██ █████ █████████ ██ ████████ ██████████ █████████ ███████████ ████ ███ ███ █████████ ██████ ██████ █████ ██ ███████ ███ ██████ ██████████ ███████ ██ █ █████ ██ ████████ ██████████
The author hypothesizes that the irregular flight style of the red admiral evolved as a means of avoiding predators. This is based on the fact that nonpoisonous butterflies like the red admiral need to avoid predators to survive. In addition, the irregular flight style is not energy efficient (which eliminates one potential explanation for that flight style).
The author assumes there’s no other explanation for the irregular flight style besides avoidance of predators. The author also assumes that poisonous butterflies do not have an irregular flight style.
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