Bruce you have the potential situation for a good nesting experiment/observation. I have not seen any study which addresses this in such a situation. Watch closely (as I know you will) to see where each male spawns/nests. Very interesting to see if , with the room, they will colony nest with 3 or be solitary nesters. Also if this results in solitary nesting if that trait passes on to the offspring and re-occurs in these individuals the next time they spawn. I sure hope none of them are sneakers or engage in cuckoldry. \:o