For hunters, clucks are good calls to use when birds have been bombarded with a lot of aggressive calling. When gobblers cluck, it sounds as if they've got peanut butter stuck to the roofs of their mouths. You'll often hear jakes clucking when they come to a hen call. Purrs, like clucks, are usually contentment noises. Turkeys will cluck and purr about happily as they feed.
Turkeys also purr loudly when they're angry.
Gobblers will purr as they posture before and during a fight. Quiet clucking and purring works well on pressured birds. Turkeys putt when they're nervous. A bird that has spotted danger makes agitated putts, and turkeys will sometimes putt while running away. Beginning hunters live in terror of accidentally making the alarm putt, which differs from the cluck only in intensity.