Silkies are the easiest for me. Longer toes, often longer legs. Often grow out wing and tails faster than females. Identifying the sex by vent is the surest way. It's how hatcheries do it.Except for silkies
I have guessed with silkies as early as week one and been right based on beak shape. It's not a science though, and there is always room for error. I've had boys really difficult to sex (silkies).
Turkeys don't have penises though. They are just like chickens in that regard.
Oopps about turkeys. I meant geese.

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