Harpies.
As you might already know, they are a type of birds with humanoid bodies, basically hybrids.
If they are one thing common with them, they are generally stupid.
And the way they behave is quite instinctual.
Therefore, it is pretty much easy to manipulate them. After all, they are predictable.
However, at the same time, it is dangerous because the term instinct is still an unknown variable.
On the other hand, there is a pretty much distinct weakness for bird-type monsters.
Fire.
However, the problem is this place is a rainforest, which means it will be pretty hard to ignite a fire.
So, I need something to blast them off at a close distance since the fire won't be spreading.
Then, how do I pull the harpies?
With a simple bait.
'Although I didn't anticipate such a thing would happen, at least I brought a bunch of fresh monster meat with me.'