Obviously we trim the sides of all our narrow roads soon after the kids break up from school, by then birds have pretty much finished nesting.but its ok and no one can ethically challenge a road being made safer/better visibilty or brambles from harming a cyclist
key theory is to check theres no birds nests in that stretch,
https://www.nature.scot/sites/defau... - Bird Breeding Season Dates in Scotland.pdf