Almost nothing is known from hybridization studies about the inheritance of courtship behavior of females, or of their responsiveness to particular male signals. ↗
Thus the genetic basis to the origin of bird species is to be sought in the inheritance of adult traits that are subject to natural and sexual selection. ↗
With the coming of radio as a mass medium, suddenly the world changed. It became about, 'Can this leader project emotional connection through the way he speaks on the radio?' And the anxiety about whether he could do that, we've inherited. ↗