The idea that chickens and gardens are symbiotic is more than half bunk. They do eat bugs, but both good bugs and bad bugs. If your ratio of bad to good is such that you’re willing to play the odds, consider that they don’t eat many bad bugs when they have a belly full of layer pellets. And if they are hungry, which would be the way to get them to eat your potato beetle larvae, then they’re also going to be hungry for your garden plants. They like the same foods we do, and seem to especially like the same foods we especially like, like berries and heirloom tomatoes. They do cultivate and drip nitrogen, but they’re also destructive. If someone showed up at your doorstep and offered to sell you a bunch of tiny tractors driven by mentally-deficient drivers to turn loose in your summer perennial garden so they could randomly cultivate and spread manure you’d tell them to take their crazy idea and get off your lawn. But we’re suckers for the allure of a good complimentary system – especially natural ones. So it’s easy to put aside our logical minds and convince ourselves that our freeranging chickens must be benefiting us somehow.
To be clear, there are advantages to freeranging your backyard flock. You don’t have to build a run. You get the satisfaction of letting the little dinosaurs live their best lives. You probably save some money on chicken food bills – actually, strike that last one, since the inevitable mortality you’ll eventually suffer will cancel out any food-bill gains over the long haul. So there are two advantages. The point, if you’re considering chickens, is not to suggest you shouldn’t let them freerange. Just don’t get deluded into thinking they’re little garden helpers.