Possibly from Greek πάπια (pápia). Compare Urum папи (papi), папий (papiy), пепий (<span class="searchmatch">pepiy</span>), Mariupol Greek папи́ (papí). papiy duck...
Compare Crimean Tatar papiy. пэпий • (<span class="searchmatch">pepiy</span>) duck. N. A. Baskakov, S.M. Šapšala, editor (1973), “пэпий”, in Karaimsko-Russko-Polʹskij Slovarʹ [Karaim-Russian-Polish...