Which came first?

In 1966, the creators of Green Acres was brave enough to tackle this important issue. Appearing in season 2, episode 12 titled, A Square is Not Round, Lisa discovers a few square eggs mixed in with the rest. How did they get there? Are they real? How can we find out which chicken laid the square eggs?

"Well, it should’t be too hard to find out, all we gotta do is look for a square chicken"

To attempt to answer this age-old question, a wise man requested 3D models of each. Now, extensive experiments are being performed by America's greatest minds. Locked safely away in Higher Than Top Secret facilities, only the most elite are granted access. Results of these tests may change the course of human eggsistence forever!

Are square eggs the future? Or, perhaps a resurgence from the past!