No, bucks don't come into estrous like a doe, but do they feel "it" before the does come into it?

Reason I ask, a large racked buck, 8 to 10 point here in PA this weekend, wasn't dogging does, but running his nose up their "special" places in an overgrown hayfield this weekend, watched him for an hour, go to every doe (6) in the field and do this, then gave the horns to one, causing her to take the ladies somewhere where mr. aggressive was not present. No calling, grunts or can calls, could convince him to close the distance 50 yards to me with the bow.

What do you guys think? He wasn't "dogging" them, wasn't running, checking scent on the ground, just feeding, sniffing, then moving onto the next one...kinda like a frat boy on $2 pitchers of PBR on a saturday night