Sometimes I use my voice to owl hoot at dawn or dusk, but my personal favorite is the peacock call. I use the Triple Shock from Primos, so I'll mix it up between a peacock, pileated woodpecker, and a coyote howl. It's weird, but sometimes they won't respond to the woodpecker, but you can wait about a minute and hit a peacock or coyote and they'll gobble. If they are fairly close, I avoid the coyote for since they are predators. I've found that that thing is so loud and shrilly that it doesn't really matter if you make an animal call or not, just make it scream. I use it all times of the day. I've even used it when I've been working a bird for a while that is still a ways off, and he decides to go silent for a while. I'll hit it to get him pinpointed to determine if I need to move or if he's slipping in. I do think they get conditioned to them though if they get messed with a lot. That's why I like to mix it up. I also like the peacock call if another hunter is moving in to my area. Unless they are idiots they can figure out that another hunter is working the bird when they hear it, and you don't have to wait until they bust your set-up for them to know you're there.