There is a difference, IMO, between keeping poultry on land or in a rural/country setting and keeping poultry in an urban/suburban neighborhood setting with small lots and close neighbors. We live in a suburban neighborhood where chickens are permitted. Coop maintenance is a priority for us. We scoop and clean the coop and entire run/lawn every day (because we don't want to smell it nor do we want our neighbors to deal with the smell. They have every right to enjoy their property free from odors from our birds).
To the original poster, you must speak with them. They may not be aware of the odor - seriously. You seem like a very conscientious neighbor, and simply wish to exist peacefully with those around you. You and your guests DO have every right to enjoy your property without the "fragrance" wafting from the neighbor's large coop. -make the effort to speak with them first, and then if there is no sensible resolution - go to the proper code enforcement authority within your city/town. -best of luck!
To the original poster, you must speak with them. They may not be aware of the odor - seriously. You seem like a very conscientious neighbor, and simply wish to exist peacefully with those around you. You and your guests DO have every right to enjoy your property without the "fragrance" wafting from the neighbor's large coop. -make the effort to speak with them first, and then if there is no sensible resolution - go to the proper code enforcement authority within your city/town. -best of luck!