Mixes of mixes, so typically no sexing in the down unless you stumbled onto some color sexing (not likely).
Sometimes (emphasize sometimes) in wild types the chipmunk down can give indication (if you stumbled onto color crossing) with full darker chipmunk stripe likely girl while the broken...
We need a whole lot more information to even begin to guess. What breed(s) were the mothers? father(s)? If chosen carefully, you can get down colorings reflecting gender (sex linking or autosexing), but only if breeds for parents are chosen carefully.
If I assume mixed flock birds, then there...