My cardinals seem to prefer the less crowded times at the feeders too, Ann--Jim and I would refer to them as the "brunch birds" b/c they came late for breakfast. They are often the last ones I see out there at night, too, after everyone else is in for the evening.
“We have to understand that the world can only be grasped by action, not by contemplation. The hand is more important than the eye ... the hand is the cutting edge of the mind." ~Jacob Bronowski