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  1. Grazie al sito che hai indicato, ho finalmente scoperto perché una sera le famose luci dell’Empire State Building erano spente… “During spring and fall bird migration seasons and particularly on cloudy, humid and/or foggy nights, when large numbers of birds are seen flying near the building, the tower lights are turned off. Observatory personnel on the 86th floor outdoor deck notify the engineers. The birds are attracted by the lights and there is a danger they will fly into the building and be killed.”

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