Where does “mottled duck” come from?

mottled duck (English) comes from English mottled, from English ED, from Japanese エンディング, from English ending, from Middle English ending, from Middle English endyng, from Old English endung, from Old English endian — on, onto.

mottled duck (English): A medium-sized dabbling duck, "Anas fulvigula"

Definitions

  1. A medium-sized dabbling duck, "Anas fulvigula"

Ancestry of “mottled duck”, step by step

mottled duck traces back through two separate lines of ancestry.

via English mottled

StepLanguageWordMeaning
1EnglishmottledColored in patches; spotted; simple past tense...
2EnglishEDInitialism of erectile dysfunction; Initialism of...
3Japaneseエンディングending, especially of a broadcast or performance
4EnglishendingA termination or conclusion; The last part of...
5Middle EnglishendingAlternative form of endyng
6Middle EnglishendyngAn ending, termination, or conclusion;...
7Old Englishendungending
8Old Englishendianto end, make an end of; to finish, complete; to...
9Proto-Germanicandijōnąto end, bring to an end, finish
10Proto-Germanicandijazend
11Proto-Indo-Europeanh₂entíosfront; forehead
12Proto-Indo-Europeanh₂ent-face; forehead; front
13Proto-Indo-Europeanh₂en-on, onto

via English Duck

StepLanguageWordMeaning
1EnglishDuckTo quickly lower (the head or body), often in order to prevent it from being struck by something
2Dutchdoekcloth, linen, fabric; a piece of cloth; screen,...
3Middle Dutchdoeccloth
4Old Dutchduok
5Proto-West Germanicdōkcloth, rag
6Proto-Germanicdōkazcloth, rag
7Proto-Indo-Europeandwōg-
Every word from Proto-Indo-European h₂en-Every word from Proto-Indo-European h₂ent-Every word from Proto-Indo-European h₂entíos