Hard to tell especially with the red light. They look like Easter Eggers sometimes called Ameraucana(but really arent, whole other discussion) Here is a pic of one of my 3 week old EE's
Here's an article on above...
https://www.fresheggsdaily.com/2013/12/ameraucana-vs-araucana-vs-easter-egger.html
They are eating chick starter like its going out of style. No illnesses. They got electrolytes & probiotics for first couple of weeks. Now just fresh clean water! Thanks!
Have trivisol(no iron) not the polyvisol.
When and how much would you give a 2-3 week old chicks? Do you give it only when exhibiting signs or symptoms of something or can you give it as a supplement??
Here are a couple of my EE’s on the trip home. Red X is 1 of my black australorps(kind of my favorite, don’t tell the others)
http://www.thehappyhealthychicken.com/easter-egger.html