Black laced silver Wyandotte, they are all supposed to be pullets. Crema, on the left, has always been the smallest of the three. But what is she doing, is she trying to crow? Or could it be a digestive issue, she's the one I asked about in a different thread, who has frequent very watery poops with lots of what look like undigested crumbles in them.
Here's that thread: https://www.backyardchickens.com/threads/4-week-old-wyandotte-watery-lumpy-poop.1356359/
Here's a video of her (I hope she's a her!)
Here's that thread: https://www.backyardchickens.com/threads/4-week-old-wyandotte-watery-lumpy-poop.1356359/
Here's a video of her (I hope she's a her!)