Climate warming will directly affect the number of breeding birds. Ornithologists believe that due to the rising temperature, a series of severe weather occurs frequently, which will affect the migration time, migration route, community distribution and composition of migratory birds. In addition, climate change leads to changes in the structure of various ecological communities, which will also indirectly affect the bird population.

It is common for humans to lose weight, but do birds lose weight in pursuit of beauty?

Of course not. Under the influence of the environment, some birds have to change themselves to adapt to the surrounding environment.

Global warming has caused some birds in Australia to lose weight.

A research team led by biologists from the Australian National University, after measuring eight kinds of Australian bird specimens in the museum, found that birds living in southeastern Australia have shrunk by 2% ~ 4% in the past century. During the same period, the average daily temperature in Australia increased by 0.7℃. Researchers believe that global warming may prompt birds to evolve into smaller bodies, because slimmer bodies are more conducive to heat dissipation.

Zoologists at the University of Melbourne believe that this study reveals the consequences of global warming, and the rising temperature of the earth threatens the survival of larger birds.

Previous similar studies showed that some birds and mammals in Britain, Denmark, Israel and New Zealand also showed a trend of "slimming".

Global warming will seriously threaten biodiversity, because life can't bear such rapid and huge changes.