Need help with gender questions on Black Cochin chicks.

[sweeterdeeter42]

3 1/2 week old LF Cochin chicks. What gender are we????

#1

#2

#3

#4

#5

 

[sweeterdeeter42]

Also, I am leaning towards keeping the first three, since they have better feet feathering than #4 and 5. Any opinions on that as well?