I’m sharing the below article and video that were produced by The Verge Science.  I found this article by way of Vox Media and too steal a line from them, this is an “egg-cellent” explanation on the science of why eggs are shaped a certain way.

The beginning of the video talks about older theories on egg shape, which totally made sense to me, then they dug into the new science that has a fresh and much more pragmatic theory.

Original article: https://www.theverge.com/2017/6/22/15845802/egg-shape-birds-evolution-flight-ability

If you don’t follow The Verge Science or Vox Media, I hope you give them a look.  Both produce interesting content and I really enjoy their use of info-graphics and video.