Several years ago it was thought that exposing the young to black light rays would ease their transition with the painful development of their pin feathers.
Years later, it became more obvious that all the black light did was allow them to develop fuller, thicker, more glorious feathers but did not aid in the pin feather emergence.
Trying a soothing purple lamp did help.
Here we see Romulus and Remus Chicken from Rome, Georgia. They were volunteered (by way of their mother Ethel, seen in the picture) to try the light spectrum just above ultra violet. I think that’s either x-rays or gamma rays, I can’t remember.
In any case, nothing seemed to make much difference. Although they both did seem to glow a little in the dark along with their dear mothers arm.