ᴺQ. [ᴱQ.] ^pehtë n. “cox-comb, *crest (of birds), ⚠️plume” (Category: Feather)
A noun appearing as ᴱQ. pekte “plume, comb (of cock)” in the Qenya Lexicon of the 1910s under the early root ᴱ√PEKE (QL/73), also mentioned in the contemporaneous Poetic and Mythological Words of Eldarissa in its stem-form pektĭ- “cox-comb” (PME/73).
Neo-Quenya: I would use the later word ᴹQ. lúpe for “plume”, but I think this Early Qenya word might be salvages as ᴺQ. pehtë “cox-comb” as a derivative of the Neo-Root ᴺ√PEK(W) “comb”, perhaps usable more generally for the crest of birds.
References ✧ PME/73; QL/73
|ᴱ√PEKE > pekte||[pekti] > [pekte]||✧ QL/73|