I have noticed that when I shoot in the evening the next morning is the best time to take a friend because I know we will be in the birds. Those birds get split up and now they dont know where each other is roosted at so when you slip in there they will come runnin. If you did it in the morning then they will come back that afternoon just move your setup so you aint callin from the same spot you may get new birds to come in as well.