I was in the National Forest with my camera. The day was crisp, and the leaves were turning gold and red. When I spotted the white-tailed buck, I froze. He wasn’t more than 15 years from where I was standing. The wind must have been right, because he kept on browsing the mossy ground. I lifted my camera very slowly. Carefully, holding my breath. I lifted the camera to my eye. Turning the focus ring, I framed the deer’s head. Just as I was ready to press the shutter release, the buck raised his head. He was looking my way with wide eyes. Click, I took the picture. An instant later, the deer bounded away into the forest. He took off, but I had the shot. Today, the framed photo of that buck hangs above our fireplace. What, specifically does the writer imply by saying "the wind must have been right"?