Dock 'n' duck is an odd title for a posting that only shows a picture of a circling eagle.
However, this is the second time this year that I watched an interesting behaviour whereby a duck — earlier a mallard, this time a merganser — escaped a predatory Bald Eagle by hiding under a dock. On each occasion, the eagle circled in its attempt to position itself for a dive onto the duck, but the duck out-manoeuvred it.
It made me appreciate our boat docks in a new way. Prior to their construction, a swimming duck had nowhere to hide from a predatory eagle. The duck could dive below the surface, but the eagle would simply await the duck’s need to surface for air, pounce and eat it.
An eagle circles over a dock, but had to give up when the merganser hid beneath the dock.