Gerald Stewart’s reply:

There is a very good chance that animals come to your call and you won’t see them. My father taught me at a very young age to leave an area quietly even if nothing is seen. He was very adamant about not educating animals to our presence. He did not want them to associate humans with the distress call.
We would drive into an area and drop off people and equipment while leaving the engine running. I would slip out and Dad would drive away and walk back quietly. After the stand we would not talk but gather our gear and walk out not talking until we were in the vehicle.
I have always believed that you get a couple of chances to call a predator before they start to hang up on their approach. The most educated are those that begin to bark or howl from 200 yards out. Those are the most difficult to call in.

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