Summer girl quietly left, leaves gradually yellow and withered, the weather gradually cold, for birds, also want to plan warm place migration. However, according to foreign media reports, in New Mexico, scientists and biologists have observed an unusual number of migratory bird deaths. Incomplete statistics show that deaths started around August, and researchers say the cumulative number is in the millions.
Even more bizarre, some witnesses revealed that they had noticed the strange behavior of the birds. Birds that usually begin to forage on the ground, such as trees.
Some birds, such as swallows, are disoriented and almost run into each other when they are in direct contact with humans.
One theory is that the pollution and smoke caused by the continuous wildfires in the United States caused the birds to die in batches, while others believe that the mountain fires caused the birds to migrate to the South ahead of time, but they were exhausted because they didn't accumulate enough fat and energy, so they were exhausted and had fantastic flight and foraging behaviors.
At present, further research on the incident is still in progress.