Chicken Breed and Sexing Please!

[littlechickieskls]

Hi -

We hatched these 4 babies about 3.5 weeks ago. Dad is a black cochin and the moms could be: houdan, marans, RIR, salmon favorelle, bielefelder, california white, barred rock, brahama, australorp.

Thoughts? I know they are young and totally mixed haha.

(picture 1 and 3 are the same chick at different angles)

 

[Sammi_0411]

Not great with breeds with chick 1 and 2 nothing shouts out cockerel pic 4 chick looks bit iffy comb very pronounced for age probs a cockerel but leave a bit longer come. Back for an update 6-8 weeks xx