I posted a little about this in a field report, but I thought it needed repeating here because it works so F-ing well.
If you or any of your wings have a REAL camera, take it out sarging with you and play rock star. Every honey in the place will want to find out who you are and what you’re doing. This won’t work with one of those snap shot cams. You need to have the real deal. One that's big enough to get them looking.
Give it a try! Even if you don't get any numbers you'll still have some great pics.