anagram of brat

If your mental image of a shepherd is a person with a crook and a dozen sheep on a hillside above a farm, you need to scale up. And also, those sheep probably won't be on the hillside for very long.

Transhumance is, admittedly, one of those topics where my knowledge is noticeably regional. I'm familiar with cattle ranching in the American West and, more globally, sheepherding -- which I believe is similar to goats, both of them being caprines -- but much less so with camels, and basically not at all with yaks or llamas or reindeer. I don't even know if transhumance is a thing practiced with all those species! So take this with a grain of salt.

Having brought up the technical term: what is transhumance? (Not to be confused with transhumanism.) It is the practice of moving livestock between pastures, and in particular, the seasonal patterns thereof. On the extreme end, a herding society may be fully nomadic, packing up everyone and everything to move with the animals. On the nearer end, most people stay put, and only a small number of caretakers have to move around.

One way or another, though, the animals have to move. If you have a decent-sized pasture and just one cow you keep on hand for milking, she might be able to shift from spot to spot in the pasture, letting one area regrow while she grazes on another. As numbers increase, though, there's no single pasture big enough, and keeping the herd in the same place will rapidly ensure they have nothing to eat. How large a herd you can support in how large an area will vary based on local conditions -- good soil and regular rain will bring on faster, lusher growth than poor soil and aridity -- but also, shifting pasture isn't purely a matter of bare survival. Bringing your livestock to fresh grazing will improve the quality of their milk and, in the case of animals like sheep, the fineness of their wool. So the more a region is dedicated to animal husbandry rather than farming, the larger the herds will be and the more transhumance will shape the world around them.

So far, so dry and logistical. Let me take this out of the realm of theory and put it into a shape that might matter for a story: if you lived in Spain in, say, 1540, then twice a year you would watch two and a half million sheep go ambling down the roads.

Spain practiced seasonal transhumance, where livestock move between summer and winter pastures. Thanks to the geography of the peninsula, in summer the sheep lived in the cooler, wetter lands of Old Castile and León, and then in winter they were driven south to the fields and hills of Extremadura and Andalusia. This ensured they had fresh grass year-round, which contributed to the excellence of Spain's wool industry.

Wasn't that terribly disruptive to everybody in between those two regions? Hell yes, it was -- and for those at the ends of the route, too. Farmers weren't supposed to plow the pastureland or use it for crops, and as the political power of the Mesta (the association of livestock owners) grew, this led to them pushing for more territory, forcing farmers off their land. To prevent the sheep from trampling crops, there were dedicated rights-of-way for the sheep (called cañadas) that nobody was supposed to build on or cultivate, but of course farmers encroached on those boundaries. And since the sheep had to follow set routes and the people along them hated this disruption, anybody selling lodgings or food often set an extortionate price -- which in turn meant the wealthier members of the Mesta, each with thousands of sheep, eventually squeezed out the smaller livestock owners.

Seasonal transhumance on that gobsmacking scale is fairly rare, but smaller versions of it are extremely common. In mountainous areas, the transition is vertical rather than north to south: in the winter livestock will live down in the valleys, then be driven up to the slopes when the weather warms. In these cases a small number of shepherds (or cowherds or goatherds -- whatever terms is appropriate) go with them to herd the animals, and to protect them. Those herdsmen have to be tough, because they're frequently living alone or in very small numbers, in rough accommodations, and vulnerable to all kinds of threats. Outlaws and poachers, mountain lions and wolves, all may have an interest in snacking on an isolated flock.

Doing all of this benefits enormously from assistance. We probably could not have herded large livestock in any meaningful quantities without first domesticating dogs, who can sprint about to keep a herd clumped together or chivvy a straying beast back into the flock. Dogs also double as a warning system and assistant guard against the threats mentioned above. The addition of horses again makes it easier for a small number of humans to control and direct a large number of animals. Cattle ranching on the scale it's been practiced in the American West is essentially unthinkable without mounted cowboys, as the average herd driven from Texas to the Kansas railheads in the late nineteenth century was three thousand head.

What usually puts an end to this kind of thing is the growth of enclosure. That doesn't always mean literal fencing (though it can); it just means that land is cut off from common use, reserving it only to the landowner and whatever they choose to do with it. Often there are valid reasons for enclosure, as tighter control over a piece of land means you can do things like complex crop rotations for higher productivity without worrying that somebody's sheep will interfere . . . but it also generates a huge amount of resentment among those common people, sometimes to the point of outright rebellion.

And sometimes rebellion itself is the cause of transhumance decline. Wars make it hard to move livestock safely across large distances, and with the pattern broken, it may be difficult to get back. Or perhaps you've been raising sheep for fleeces, and something causes that market to crater, so it's no longer worth the expense of moving them back and forth. Conversely, something like an epidemic or an extended dry period can cause transhumance to surge, as there's no longer as much need for farmland or the soil is no longer as fertile for crops.

So this can be anything from a background detail in a political brangle, to a source of income for an innkeeper on a livestock migration route, to a major inconvenience for a character attempting to travel quickly down roads filled with sheep, to the reason why your lonely shepherd protagonist stumbles across an ancient evil awakening in the hills. (We've had plenty of innocent farmboys in the fantasy genre. It's time for the shepherds to shine!) Just remembering that humans are rarely the only ones living in an area can make a difference to the story!



(originally posted at Swan Tower: https://www.swantower.com/2026/06/05/new-worlds-transhumance/)