I had a customer stop today. He'd been to Lee New Hampshire to buy a grabber shear thing for his 8000 lb excavator. I'd never seen one or even known they made such a thing. He said with the right mount it could be used on a tractor with the quick connect mount. He said it would shear a 7 or 8" tree and then you lay it down where you want. The only thing I'd ever seen like it is the loggers use the sawhead on tracks but runs a large think toothed blade.
Heres a photo of it in his truck.


Heres a photo of it in his truck.