-:
>>
>>you need to be trained to recognise the sexe in one glimpse of an eye .
>>Professionals who can do that are well payed. it si important for the
>>industry to know the sexe right away.
>
>I didn't realize chickens were that dimorphic.  With parrots, which are the
>only birds I see on an up-close-and-personal basis with any regularity,
>even those with obvious difference (e.g., plummage) aren't obvious until
>they start to show some real feather color...


They look exactelly the same , you have to look at the sexe , it is so tiny
that you need to be trained to see it.
jean-claude