Most goose advice you will read is written as though every property is a private lawn. On municipal ground in Avon, two local rules shape the job before any dog gets out of a vehicle, and a provider who does not raise them has not read the town code.
The first is the leash rule. Avon Town Code Section 41-24(a)(19) requires a dog or pet in a town park or public place to be on a leash no longer than six feet. There is an exception, and it is a specific one: it applies when the Director of Recreation and Parks authorizes otherwise in writing, or under site regulations. There is no blanket working-dog exemption written into that provision. So dog-based work on Avon park land needs written site authorization first, and any company that tells you it can simply turn up and work a town field is describing something the code does not currently allow.
We would rather say that plainly than run into it on site. Getting that authorization is a normal part of scoping municipal work, not an obstacle, but it belongs at the start of a conversation with the town rather than in the middle of a visit.
The second rule is the wetlands one. Under Section 6.1 of Avon's wetlands regulations, nobody may conduct or maintain a regulated activity without a permit from the Inland Wetlands Commission. The commission publishes its regulations, a wetlands map, application material, a site walk checklist and a Duly Authorized Agent route through the Planning Department, and applicants are encouraged to discuss work before using that route.
This one gets misread in both directions. Moving birds off a lawn with a dog is not shoreline construction, and it would be wrong to tell you every goose visit in Avon needs a wetlands permit. But planting a shoreline buffer, installing a barrier at a pond edge or changing a watercourse margin can be a regulated activity, and that is a question for the commission rather than for a contractor. Avon does not publish a typical review duration for that process, so anybody promising you an approval timeline is inventing one.