I do not know why these ducks are named after a nearly invisible thin ring around their neck instead of the prominent ring on their bill. A little (very little) ornithologist humor?

“In order to see birds it is necessary to become a part of the silence.” ― Robert Lynd
I do not know why these ducks are named after a nearly invisible thin ring around their neck instead of the prominent ring on their bill. A little (very little) ornithologist humor?
