Cheshire has one procedural wrinkle that most neighboring towns do not, and it catches people out.
The Inland Wetlands and Watercourses Commission is the local body, described in the town budget as seven appointed members regulating activity in or near designated wetlands and watercourses, with Planning and Development staff supporting it. The town publishes the regulations, applications, the required notification list and the bylaws.
Here is the wrinkle. Because so much of Cheshire sits in public water supply watershed and aquifer protection area, the town's checklist calls for a Regional Water Authority project notification alongside the local application, plus Natural Diversity Data Base and Department of Public Health notifications where they apply. The RWA notification has to go out within seven days of filing with the Planning Office. That is a real deadline attached to a form people forget exists.
As everywhere, this applies to changing ground rather than to moving birds. Planting a shoreline buffer, putting a barrier at a pond edge or regrading near a watercourse is the sort of thing that goes through this process. Working a dog across maintained turf is a different activity, and it would be wrong to tell you that every goose visit in Cheshire triggers a filing.
On timing, staff describe applications being accepted at a first meeting with future consideration dates set from there, and the town publishes no typical total review duration. So nobody, us included, should be giving you a date.