Sycamore help, please.
 

I am mid-way through purchasing a property with land and went back to view it again last night. I discovered that the land contained a number of sycamores - I hadn't really noticed them on first viewing some time ago as the 'helicopters' weren't visible so I didn't recognise them.Would the best/only way to keep the horses safe be to fell and remove all the sycamores? It seems a shame because some of them are lovely trees, but there are too many to fence off & presumably the helicopters would travel quite a distance.

أكثر...