I think you got the F's right for the generations.... My wild stab at his comparison of the hen's never looking silver like some of the cocks would have a bit to do with the (at that time, I think it has changed recently) influence of the hormones on the feathering during growth as the chick feathered out.
Trying to say if he thinks that the male hormones would give a silver appearance to the neck hackles, then castrate the chick to eliminate the hormones as the chick grows to adult plumage and see that the appearance of silver is NOT there - thus aligning with the females that never show silver. I think within the past decade they have taken a different view of the internal sexual growth (as influenced by hormones) of chickens at the cellular level...but in his time, he may have thought that it worked in chickens in the same manner as it works in mammals, etc.
Very worthwhile article and I appreciate your annotations.
ETA - hope what I wrote makes some sense.
"Was dich nicht umwirft, macht dich starker" "What doesn't kill you, makes you stronger."-Friedrich Nietzsche
My new tag line...added to the end of every sentence---> "...... after all, they ARE chickens!!!"
Here's a link to my BYC page: http://www.backyardchickens.com/a/chickats-page
Here's a link to my BYC blog of sorts http://www.backyardchickens.com/a/jottings
"Was dich nicht umwirft, macht dich starker" "What doesn't kill you, makes you stronger."-Friedrich Nietzsche
My new tag line...added to the end of every sentence---> "...... after all, they ARE chickens!!!"
Here's a link to my BYC page: http://www.backyardchickens.com/a/chickats-page
Here's a link to my BYC blog of sorts http://www.backyardchickens.com/a/jottings






















