I had the same thing happen to me until the corn got cut down and there food was gone they found that bait pile then. now they cant get enough well lets see what happens when the corn comes back this year?
When calling coyotes, more often than not they will circle on a target they are
coming into and approach from the downwind side. Presumably they do this in
order to align what they smell, with what they are hearing.
This means that you should always have your downwind side camouflaged and have
an open shooting lane. If the area is heavily covered the coyote could come in
take a look and be gone, with you none the wiser.