I took your suggestion and sent the screen shots showing the focus points to Nikon Service for their comments. The camera had been to them a few weeks ago for a sensor cleaning. I asked them if they had checked out the entire camera. I am waiting for their response. I have a feeling the camera is about to make another trip for service. Hopefully, they will give me some clue as to what to check in my menu settings. Maybe, I screwed up something and there will be an easy fix. What auto focus settings are you set at for shooting birds? I focus using the back button. My shutter is set to only snap the picture.