By Morris Dean
[Originally published December 20, 2012]
The following science story came to my attention [the day I originally wrote this]:
[Originally published December 20, 2012]
The following science story came to my attention [the day I originally wrote this]:
It was for quite some time thought that when chickens hatched and immediately began pecking the ground for food, this behavior must have been instinctive. In the 1920s, a Chinese researcher named Zing-Yang Kuo made a remarkable set of observations on the developing chick egg that overturned this idea – and many similar ones.