Going on the asteroid impact 65 mya. I kind of figure birds had the most valuable asset required to survive the extinction event and by that I mean being able to fly to whatever survivable habitat was left in the aftermath. Turns out there are other factors, one being a part of the brain I’ve never heard of…the wulst.
Only bringing this up after a thought occurred to me that at some point after the impact there must have been some areas completely filled with surviving birds. I wonder if such areas should they have existed, might be hinted at in the fossil record.
https://www.zmescience.com/science/n...%20extinction.