Here is the chick that has the dark head with yellow fluff body. Very calm chick when you can catch it. LOL. Most of the other yellow chicks have a dark grey mask around their eyes.
Here are two more. The one in the back has a dark head. There is another that have even darker. He is quick and I could not catch him. I do not want frighten them.
Here is one of 10 hatchlings from Tuesday. They hatched from Silverudd Blue egg. We have a mix of black/blue and some like this one with a grey cast over the yellow. One has a lot of black on ithe top of its head. I could not catch it to get a picture. They live their brooder heat plate.
Update we used the Govee and it is really nice as you set a temp and humidity range in the app and get notified if they go below or above the range. We had a 69% success with our hatch.