|Hooded Merganser, Franklin Park Zoo, Boston, MA|
|Barrow's Goldeneye, Franklin Park Zoo, Boston, MA|
After the bufflehead calmed down, the testosterone moved on to the hooded mergansers. As documented below, two males went into full-on display mode. We were close enough to hear the croaky/buzzy call accompanying the display.
Lily, as you can hear above, thought it great fun. I agreed.