On March 3rd, the swan returned on its way to the north. Is this a warning from nature?

Before and after the solar term, the temperature will rise slowly, insects will start to haunt, and swallows and swans will also fly back to the north. But on March 3, two days before the fright, a strange thing happened, and a group of swans moving northward turned back, which can't help but arouse the curiosity of scholars. What caused this phenomenon? Is it really a warning from nature?

Let's review the whole thing first. On March 3rd, a swan numbered F52 set off from Baisha Lake in Gangxi Town and arrived in zhuanghe city, Dalian. However, it only stayed in zhuanghe city for 20 hours and then flew back with its companions. It is rare for a swan to move north and return like this in history.

Let's look at the habits of swans. They like to live in lakes and feed on aquatic plants. Every October or so, swans fly from the north to the south. The next spring, when the weather gets warmer, they will fly back to the north from the south. So, why did the swan turn back halfway this time?

In fact, this is mainly related to the temperature. Only when the temperature returns to normal can swans live normally. If the local temperature is low, swans will find a warm place to live. Therefore, the main reason for the swan's return this time is that it was affected by the cooling in Liaoning Province.

On March 3rd, Liaoning Meteorological Bureau issued a yellow warning for heavy snow. On this day, a large area of snowfall did occur in Liaoning Province, which caused the temperature that had already warmed up to drop again. This sudden drop in temperature was unexpected by the swans, which caused the swans to fly 600 kilometers in three days, which was enough.

So if it is an early warning of nature, I think it should be the role of the greenhouse effect, which also invisibly reminds us to protect the ecology. Once the ecology is destroyed, human beings will suffer, which also sounds an alarm to us.