The song of the chingolo can be heard across South America. But young songbirds were no longer learning the tunes of their ...
Other birds, of course, are singing in March, for example, the American robin, but it seems they are more often vocal at dawn ...
Qi was able to show that another chemical messenger called acetylcholine can trigger dopamine release in the bird’s brain ...
At the same time age serves as a brake on change, as older birds continue to sing song types that are becoming less frequent in the population. In this way, older birds can function as “cultural ...