RE: Roosting birds?
I would try to roost a bird every evening if I had the chance. I have mostly hunted run and gun style on large areas of NF. If I can find a bird that gobbles on the roost I expect him to be hot in the morning or at the very least talking. That doesn't always hold true, but I've always felt a roosted bird put me a leg up in the morning.
If I can roost one late season w/ full foilage, I'll push in really close before light, especially if I'm sure where the bird is. Then I hope to never say a word and roll hima couple steps afterhe touches down.
As far as the wing flap goes. If I'm trying to work a bird off the limb, say I know he's got hens around or I can't get to the side I expect him to go or I'm trying to keep him from flying down across an obstacle, I'll always do a couple really really soft tree yelps w/ my head leaned back pointed into the tree. Then when I think it is time for flydown I'll do afly downw/ my cap from above my head and into the leaves. I may throw in a cackle during the wing flap, but I normally won't say anything after that until he touches down. You know he likes it when he gobbles at the fly down w/o any calls.
I've had the hens almost set down on me after that.
I can't imagine not roosting birds if I have the opportunity to get out.