File talk:Mute swan (Cygnus olor) in Bowness-on-Windermere, England.jpg

maybe a juvenile (first winter) polish mute swan

As the knob is too small for an adult mute swan in good health, and the shape of the black skin between the eye and the bill is not similar to an equilateral triangle (like on the adult mute swan), but more thin close to the eye (like on the juvenile mute swan), i'm asking to myself if this is a juvenile (first winter) "polish" mute swan (aka Cygnus olor immutabilis), the kind of mute swan which born already with similar-white plumage;

does anybody have opinion about this?

--5.170.140.223 20:28, 27 February 2021 (UTC)