After reading all I could find and looking at umpteen photos my guess for my little brown chicks is partridge. The feathers are brown with gold stripes and each one is tipped with gold, the tail looks like it might come in darker. They all look like hens. 1 of the black and white is a hen and I think the sultan may be, my 3 little mixed babies with a japanese mom are hens. Could sex be influenced by perhaps weather? I know some reptiles eggs predominatly one sex or the other depending on weather. Last year out of five chicks I got 1 hen. I probably think too much.
If my guesses are all wrong don't hold back telling me so I want to shed my ignorence quickly.