Cockerel or puller?

[mimzy024]

Trying to figure out if the grey one and white one are cockerel or pullers. Pretty sure the black one is cockerel.

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[DancingWthDucks]

Most of the time it is quite hard to tell with silkies. How old are they?

 

[drumstick diva]

are these Hatchery bird?

 

[BantamFan4Life]

The darker one is a cockerel, the others look like pullets