The canada geese around our area are well overdue for a culling. I can get to within 2m of a feeding flock at the moment and with a net I think I could get 10+ in a throw but of course there would be public that would see netting as causing undue stress to the animals. I'd buy a PCP to have a go at them if it was allowed(there are a couple of spots with good backstops where the geese could be shot from cover).
The ground around the kids playground where we are is a mine field of goose crap as are all of the paths and on a busy day I'd estimate close to 150 geese on the 4 ponds/grassy flats in the area. Our local council(KCDC) has a management plan but is not following it.
Hugh Shields(who seems to be currently banned from the forum) was doing some private culling in the area but without a large scale effort I doubt any one person would make a dent in the population. Here is a link to a thread where he posted a chat with the local wireless
https://www.nzhuntingandshooting.co....ontrol-108383/
Unsure if there is an answer to controlling the CG population but the seemingly nothing being done now isn't working in our area.