This is my 4th summer with hummers. Got my first posessive male this year. He sits on "his" trellis guarding "his" feeders all day long, even in pouring down rain. He's suppose to leave before the females but I have visions of him froze to the trellis. Anyway, you need to move the other feeder to the opposite side of the house, where he can't see it. He might buzz by to check it out but won't stay long cause he has to protect "his" feeder. Worked for me. Wife is right. Typical male. Guarding his turf.

If you put another feeder out of sight of the first, it may help, since he can't effectively guard both simultaneously. He'll do a pretty good job, but interlopes will get the occasional sip.