i have been thinking about cutting out some lower brush to open up my field of view and shooting distance. and i got the OK from the land owner

I had planed to do this with a hand saw but there is alot more i could get with a chainsaw there are a few trees that are thick but only growing on the ground almost like a pine brush do to either breaking or to much over head growth

if i go in with a chainsaw will it push the deer away? if so how long will they come back or not ? should i just use a handsaw