No clue what I have. Any help?

[RunDMCruz]

So these are our first chickens ever. Got them when they were about 3 days old from the feed store. Now they are showing lots feathers. Thw pics are of them taking a dirt bath next to my sunflowers. The brown one with his had in the dirt all you can see is his back side, her Name is Taco, the larger black one is Chef, the smaller black one is Gonzo, and the pretty one posing with my boy is Roxy. Thanks for any help