Looking at the description:
The description falls into three parts. First a summary of what just happened so the player understands the basic data. After that we get a description of life among the herdsmen. Then finally we get a view of the same time period through the eyes of the Vulture People.
The last section is extremely long and detailed because not only did the vulture people move south into a new area, the players actions further changed the race in a very dramatic way.
Over the past three hundred years this population has gone from being humans, to being humans with birdlike features, to finally becoming actual birdmen! They even lay eggs now. Lets look at that post in detail.
The first part recounts the history of the last two turns from the perspective of "The Chosen" as they are now calling themselves. This is the first time we get a description of these events SPECIFICALLY from their point of view. It ends with them moving south away from their fully human cousins and Drethnor's completing their transformation into TRUE bird men.
The second part recounts how this change has altered their lives. They have stopped using most tools because their natural weapons are more effective and eventually have forgot that technology. They also are no longer nomadic because they have large very fragile eggs to protect, they can't cart those around! Like birds they nest in trees leaving Drenthor's Own (The giant birds) below guarding their eggs. No way those HUGE eggs could be lifted into a tree! They also seem to have pits where they leave meat to rot as Drethnor specified they could only eat rotted flesh. Overall it's a HUGE change.