Offensively sexist Wikipedia entry:
Roosters almost always start crowing before four months of age. Although it is possible for a hen to crow as well, crowing (together with hackles development) is one of the clearest signs of being a rooster.
It is only the Cockocracy that keeps hens from crowing.
If it weren’t for cockerel oppression, hens would have an equal station at the roost, protecting the brood, perhaps trading off. In a true chicken coöp coop, the cocks would share in nesting chores, allowing hens to patrol the grounds, too. And besides, keeping other cocks from entering the territory is just cock-of-the-walk privilege. The hens should be able to choose from a variety of cocks, and prevent any one cock from dominating the walk.
In the coopunistic future, where nobody has one exclusive sphere of activity but each can become accomplished in any branch she wishes, chickendom regulates the general production and thus makes it possible for chickens to do one thing today and another tomorrow — hens would be able to lay eggs and nest in the morning, peck in the afternoon, roost in the evening, criticize after dinner, just as I have in mind, without ever becoming nester, rooster, pecker or critic.
twv