Dunno which building you folks refer to as the "diner" or the "bleachers" or the "tower", but I do know where the birds are (and have been).
Monday night 6:10 p.m. birdie on the northeast corner of "the building with the letters on it"!

This morning at 7:45 both birdies on east side of same building, each parked on his/her own "O". o_O