With mixed breeds it is hard to tell. I have a barred rock mix roo, and he will throw out chicks with dots on their heads depending on what hen laid the egg. The dots are always the boys.
This is My only mix I currently have.
I found This little unexpected chunck munk in coop yesterday morning!!!!
Hatched out of my Easter eggers green egg and dad was a splash blue laced red wyandotte.
To me it looks like a perfect split of what EE chicks and wyandotte chicks look like... I think I should get a olive egg out of the chick
Also do any of y'all have tricks to tell if it's pullet or cockrel by the coloring?
Ill post pics as She matures