Respect the Cock

Dear CF,

I learned yesterday that in my city one can legally own no more than 12 chickens. This puzzled me. Why 12? At first I thought it might have to do with egg packaging—grocery stores do tend to sell chicken thighs and breasts in packages of six or twelve. Maybe we’ve just internalized the base-12 principle when it comes to birds.

Wrong. Today I discovered why. It has to do with chicken family values, which consist—according to William Harvey, my scientist du jour—of exactly one rooster and, ideally, ten hens. (I know that’s only 11. I imagine city planning officials saw fit to permit a spare.)

William Harvey is justly famous for accurately describing the double circulation of the blood in his “Anatomical Disquisition on the Motion of the Heart and Blood in Animals.” It’s a rousing story of perseverance and smarts overcoming ignorance and odds. We can rejoice that after a lifetime of bitter struggle (and friendship with Hobbes, which amount to the same thing), he watched his discovery gain public acceptance.

He’s less known for his treatise on animal reproduction, a tome called “On Generation” that offers a detailed and sometimes lyrical examination of the sex lives of (mainly) chickens.

Why chickens? you ask. Harvey thought you might:

Among male animals there is none that is more active or more haughty and erect, or that has stronger powers of digestion than the cock, which turns the larger portion of his food into semen; hence it is that he requires many wives—ten or even a dozen [you see? The city officials compromised.] … Now those males that are so vigorously constituted as to serve several females are larger and handsomer, and in the matter of spirit and arms excel their females in a far greater degree than the males of those that live attached to a single female.

In case you aren’t convinced (warning, graphic imagery ahead):

The cock, therefore, as he is gayer in his plumage, better armed, more courageous and pugnacious, so is he replete with semen, and so apt for repeated intercourse, that unless he have a number of wives he distresses them by his frequent assaults; he not only invites but compels them to his pleasure, and leaping upon them at inconvenient and improper seasons, (even when they are engaged in the business of incubation) and wearing off the feathers from their backs, he truly does them an injury.

If you can get past the ick of that bit, I ask you to imagine the methodology involved in investigating the following in his capacity as natural philosopher-cum-poultry pornographer:

It is certain that the cock in coition emits his “geniture,” commonly called semen, from his sexual parts, although he has no penis, as I maintain; because his testes and long and ample vas deferentia are full of this fluid. But whether it issues in jets, with a kind of spiritous briskness and repeatedly as in the hotter viviparous animals, or not, I have not been able to ascertain.

Not having perfected the art of chicken-pleasing, Harvey nonetheless movingly describes the hen’s sexual experience: Read more of this post