Remember your roots. You have gotten used to walking around in relative safety even in the plains... and have forgotten what you knew a year ago about killing dangerous enemy with your bow from stealth. One fire arrow from stealth in the best bow will one shot those things. Carefully pick your target so you don't get a group of them. If you get more than one or they see you, shoot and move like a troll or a blob in the swamp.
They are like dethsquitos... weak but hard hitting.