It's mostly a coolness thing.
Besides, Practiced Spellcaster exists for a reason; it is a tiny cost for a lot of chickens.
Make yourself some chicken wights for some fun, and then just create more and more chickens.
Plus, haven't you read the commoner handbook? The one where they point out that, with a spell component pouch, you can create chickens out of nothing as a free action? And the whole "by RAW there is no limit on free actions" thing?
Well, if you just want to spew out chickens it's great. I would much rather use either Create Undead or Awaken Undead to get a skeleton that retains its Chicken-Infested from life, just following me around and pulling endless chickens out of its ribcage.
I mean, come on. Let's not be
silly here.
