Why did Lanshan County make this move when it was only for migratory birds to migrate for three days?

Lanshan County will make this move to facilitate the migration of migratory birds. Because the lighting will probably affect the direction of the birds, and then let them go to other places that were not in the planned route, so the lights are turned off. First, the blue mountain county closed for three days to shoot lights

At the end of summer and early autumn, it happened to be the time for migratory birds to migrate, and the blue mountain was also the place where countless migratory birds passed south. Especially during this period, because it is easy to cause fog at high altitude on rainy days, many birds have to fly at low altitude in order to see the road ahead clearly. However, flying at low altitude will not be affected by fog, but it is easy to be blocked by the spotlights thrown by humans in the square. Knowing this situation, the local urban management bureau also ordered a move at that time, that is, ordered the whole county to turn off the anti-aircraft lights within three days. This is also to facilitate the migration of migratory birds, so that the forward route will not be interrupted. Second, the influencing factors < P > There are actually many influencing factors for migratory birds to migrate. For example, quite a few areas located in the middle and high latitudes, because the temperature changes greatly throughout the year, birds will choose to move south at that time. In those places where the temperature is relatively stable, there will be more birds left behind. Moreover, temperature also affects the migration of birds. For example, when the temperature drops, birds will migrate to low latitudes in order to ensure food sources. Moreover, the annual migration time is relatively fixed, which is also related to sunshine, and the length of sunshine time also determines whether birds migrate. Third, birds also want to survive < P > And the main reason of bird migration is to survive, even those caged birds will be restless when this season comes. Because migration has become an instinct imprinted on the lives of some species, birds will choose to go to warmer places with more food in order to find enough food and keep their temperature unchanged.