15 years of observations have allowed scientists to understand that blue tit birds have become less bright. The reason for this is change
Discuss
It's not just about beauty: a duller coloration threatens the birds' survival, as they rely on their looks to attract mates.
Scientists have hypothesized that changes in the environmentenvironment, and in particular the increase in temperature (by 1.23 degrees Celsius) and the decrease in precipitation (by 0.64 mm) led to a decrease in the brightness of the color of the blue tit.
Other bird species are also adapting to the changes. A recent study showed that their beaks can grow and their body size can change.