Keep in mind that it only takes three or four rogue males in a late nesting mood to pull off a "late spawn". If you were to get out your filet knife in mid to late summer and clean several females you'll find ovaries in varying stages of development. I believe that the mere presence of nest guarding males will stimulate a certain number of female bluegill, or probably greenies to prepare to lay eggs. In bluegill and green sunfish I've found it (multiple nestings) to be the rule, rather than the exception. In nature there's a tremendous benefit to multiple spawns, as this gives a population insurance from irregular weather patterns, or the periodic presence of high densitiy predator populations.
Holding a redear sunfish is like running with scissors.
