They found that birds that flourish in cities come in two extremes: they're either big-brained but produce few offspring over their lifetime or they're small-brained and superfertile.
As far back as I can remember, I was enchanted by the natural beauty of that region and the almost tropical exuberance of the plants and animals that grow there.
This seeming catastrophe would end up being beneficial in another way, as Earth gained a new companion, which would play a major role in the blossoming of our ecosystem.
This cycling between sexual and asexual phases is called the alternation of generations, and it helps keep plants flourishing, from Granddaddy Succulent to Great-grandbaby Succulent — and even beyond that.
We understand they are not some foreign visitors, but originate here, from our own solar system, and may even have led to the blossoming of life itself on this planet.