Cutting hay and weeds with my New Holland 451 Sickle Mower

I know the sound is poor. I need a new microphone. Describes cutting hay and weeds with a sickle mower and also how to video the action using a DJI quadcopter with camera. Also describes how johnson grass grows from midsummer. I think I am going ot call it Buffalo grass, even though the real buffalo grass is a short grass.