I'm hunting the weirdest birds I have encountered in 40 years. They never gobble in the tree, instead they wait until a half hour to an hour to gobble. Then it's very brief, maybe two or three times. Anyhow I have a pair of gobblers that are running together. I have called to them three different mornings, and never get even a screw you gobble. I've called loudly, softly and mixed up the types of calls. What in the heck is going on with these birds?? I don't think they have hens or at least I have not seen hens with them.