Everything has an evolutionary basis. It’s ipso facto.
These sort of sociobiological analyses are fun and interesting.
They, though, are pretty much unprovable.
They are very much a modern day variation on the Just-So story.
I agree with you 100%.
Certainly.
I see drunken jay and other birds on my pyracantha bushes every fall when the berries begin rotting on the bush. It’s a funny sight but raises the ever so serious question, “Are birds natural born alcoholics?”
Speaking of evolution....
http://www.darksky.org/education/312
Melatonin is a naturally occurring hormone that is released in darkness and inhibited by light. It serves many functions in the
human body, primarily regulating the daily cycles of our systemic activities. Reduction or elimination of light at night can help maintain a robust melatonin release. While any kind of light can interfere with melatonin production, the short wavelength, blue portion of the spectrum is the most potent for melatonin suppression in humans. This type of light (often found in electronic devices) should be avoided during the night.