The very brief visits to feeders are very characteristic of this time of year. The male, who I assume is Fred from previous years, is just checking that the feeder is good, and therefore needs guarding. Since his territory is rather large (typically an acre) he spends most of his time patrolling it, perching near each feeder and watching. As I get to know his favorite perching spots, I should be able to get good video.
UPDATE - while breakfasting this saturday morning on the back deck, I saw a female go to feeder 2, only to be immediately driven off by Fred. A few seconds later, Fred returned to the scene, perching near feeder 1 (the one at the northwest corner of the back deck) and briefly turning towards me flashing brilliant red. Of course I did not have the camera with me - I must learn that whenever I'm sitting watching, the camera should be ready.