On roost, I don't think coyotes would have a great impact on gobbling. Once on the ground, I would say maybe. Turkeys deal with yotes every day. Coyotes take very few adult Wild Turkeys.I think the lack of gobbling is probably because the peak gobbling period is over. That doesn't mean they won't respond to calling though. Then again, I guess a healthy predator population could have an impact.I think dogs can have a greater impact on gobbling than coyotes.