[quote=@Doc Doctor]
[@MelonHead]

Yup, but keep in mind that it is like the Solid Snake of monsters. By the time Higen is on its trail (not that it leaves trails), it could be waiting miles away. 
[/quote]

That's just my explanation for why Higan is even in the area, though I've already thought of two or three methods by which the A.S.P could track your creature, particularly in light of its limited flight capabilities. 

I'll start working on a post now, going to take a little while as I have to dig up a past fight with Higan and re-enter his mindset.