https://www.dsm.city/initiatives/food/livestock.php

Sec. 18-4. — Agricultural nondomestic animals and exotic animals.

1. No horse, cow, calf, swine, sheep, goat, llama, camel, ostrich, peacock, chicken, goose, duck or other agricultural animal or any nondomestic animal shall be kept within the city's corporate limits on any lot or parcel of land unless such parcel of land shall be an acreage, except as provided under subsections (f), (g) and (h) of this section and article IV of this chapter. The area where any such animal is kept on the acreage shall be 75 feet from any neighboring residential dwelling and not located in a front yard area. The keeping of bees in hives is exempted from this section.

I thought you were allowed to have chickens in town, but this says otherwise?