Originally posted by Ghostickles:

they hear things too. if you are building, chopping, mining, taking things apart; they hear it.

I didn't know this thank you. This would also explain why hoards of Greydwarfs show up when fighting troll...

Originally posted by Fzanco:

They do spawn a lot. I used the "player built structure" trick of stopping spawns around your base. Not sure why their being so aggressive with following, can't honestly say I've experienced that

Yes I agree! It's okay for them to know where am i since i'm making noise like ghosticles mentioned but fending them off every 2 minutes is just unreasonable spawn rates! Additionally, can i ask what is the trick you used?