Also in comic form: https://stuartmcmillen.com/comic/supernormal-stimuli/
What stuck with me is that they found that by elongating the yellow stick, the baby birds would yell even harder than when their mother was there. In other words, are instincts amd impulses are imprecise and can be manipulated.
This is not a new thing, though. In some ways, this is something art has long manipulated - no love is more tragic than Romeo and Juliet's, for example.