garrot

[William Hupy]

I wonder if the practice is named after the duck, which was probably butchered in this fashion.
garrot (n.) Look up garrot at Dictionary.comkind of sea-duck, 1829, from French garrot (1757), a word of unknown origin.garrote (n.) Look up garrote at Dictionary.comalso garrotte, 1620s, "Spanish method of capital punishment by strangulation," from Spanish garrote "stick for twisting cord" (the method used in the execution), of unknown origin. Perhaps from Old French guaroc "club, stick, rod, shaft of a crossbow," probably ultimately Celtic, but possibly from Frankish *wrokkan "to twist" (cognate with Middle Dutch wroken "to twist").

[Slava]

I wonder if the practice is named after the duck, which was probably butchered in this fashion.

I'd say no to both hypotheses here. They don't appear etymologically related, and I can't really see anyone taking such pains to kill a duck.