She mentioned that you can use the pendulum to find out, and that that's how they do it in NZ. Dad, who is ferociously sceptical in all ways, so much so that he doesn't not only believe in God, Father Christmas or the Easter Bunny he doesn't believe that daughters should have opinions of their own, though admittedly I beat that one out of him years ago. Anyway he was keen to document the process of someone holding onto a chick and mum swinging her wedding ring suspended by a cotton thread over a chook and watching which way the pendulum swung. Dad recorded the details and we're now awaiting the outcome. This experiment was held on Christmas Day and the chicks were half the size they are now.
We think that she's definately right about the orange chook, he's growing tail feathers and tends to go into attack mode when confronted with a pair of human feet.
Consider yourselves part of the documentary evidence... we'll confirm or deny Mums predictions as the results come to light.
If you'd like to you can add your own predictions to the list...
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White bird with flecks of ginger. Mum's prediction: Female
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Nearly totally white bird with just a few flecks of grey. Mum's prediction: Male
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Grey chook, he looks like a hawk - mum's predictions: Female
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Grey orange chook - mum's predictions: Female
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Orange chook - mum says he's male, we think she's probably right.