Yes, left unchecked they will decimate the deer or turkey population. They love to catch fawns. Thanks for the question I'm glad some people ask instead of assuming we are just shooting them for the heck of it.
Man this past weekend coyote hunting all I seen was bobcats! It was strange not a single coyote but bobcats everywhere! None one got close enough to shoot I might add. I watched one catch birds and rabbits for about a half hour!
As far as calls go I use mouth calls because I like to put my own twist on the call sequence like maybe taylor it to the time of year or even if I think its a big rabbit or a little rabbit. Sounds crazy I know but it works. Even with the howls. Being able to cut it off a little short or draw it...