DH is calling those chicks the "millennials" because they're still living with Mom & Dad on the top roost. Normally the chicks are brooded by a bantam & assume her lower status. When she leaves them, they stay around the edges of the flock & do not interact with the adults. They sleep on the lowest roost or in a nestbox (Ugh! I hate that!)
These millennial chicks are 8 wks & still on the top roost. They are in the middle of it all & 1st in line to grab the best treats.
Millenials is the perfect name for them! They are getting a real boost in their start in the flock, some will retain the boost, others will slide down in the pecking order once the mama hen cuts them loose. Either way they are getting a good start!