Common Loon in beginnings of breeding plumage.
"Positive Conditioning" is what happens when an individual of another species begins trusting a human. This is one of the two adults, comprising 2017's season at the pond of my boyhood. This bird is about 6 feet away from me and obviously just came by to say hello. I am certain beyond a doubt that Common Loons are able to identify individuals....either the person or at least their watercraft. Today (May 10, 2017), the pair actually came to meet me at my point of launch as I prepared to enter.