The color on that egg was pretty light and I didn't know if I'd want to keep that chick or not. I had separated the eggs by color, but the chicks jumped over their box edge and they're all mixed up now LOL. This is my first time hatching chicks and I can already tell you that you'll need containers at least three inches tall to keep eggs separated. Who knew they could jump!
blue x blue = 25% splash. I'm sure you already know that though because you got a blue cockerel.Good luck with breeding them! I hope you defy the odds and get at least 1/3 splash.
Boxes are not good for little feet if not lined with paper towels or something they can grip. I would think they would interfere with air flow too? Idk, but I know of your dilemma. This is what I did to keep chicks separated. Get a piece of hardwire cloth small hole size and some wire cutters and make fences in your incubator. I secure mine together and to the bottom with bread ties/garbage bag ties. I make a small bend in the wire to make a base at the bottom of fence. You want to make up your fences and make sure everything fits before you start incubating. That way when it's time for lockdown it doesn't take a long time to put it together. If you use a auto turner during incubation, you can have your lockdown setup sitting there all ready to drop in. You can cut them as high as you need as long as they aren't touching the heating elements, make as many compartments as you need and they don't restrict airflow or humidity.
I just wanted to mention something about the color on your hatching eggs. Do not discount the lighter ones. Those may have been from hens that have been laying for a long time and the eggs have faded considerably. They can still produce hens that lay much deeper blues. I was a little disappointed in the color of the eggs that my original quad came from as they were almost white, but the girls I hatched from them lay very pretty eggs. Their eggs are in the first picture and their offsprings' eggs are in the second picture: [COLOR=B42000]
