The word ᴱQ. oi “bird, hen” appeared in the Qenya Lexicon of the 1910s under the unglossed early root ᴱ√OHO¹, but Tolkien considered transferring this and related words to ᴱ√OHO² “cry” (QL/69). This word also seems to have appeared in an inflected form oïkta in the very early Narqelion poem.

Conceptual Development: In Early Qenya Word-lists of the 1920s, Tolkien had ᴱQ. oi and oiwe “bird” (PE16/132), forms that later developed into Q. aiwë “bird”. However, many years later in Common Eldarin: Noun Structure from the early 1950s Tolkien had the primitive word ✶kholjē “hen” derived from the root √KHOL “crow, cry aloud”, which seems to be a later iteration of the early oi “hen” word.

Neo-Quenya: Based on ✶kholjē, Gábor Lőrinczi proposed a neologism ᴺQ. holyë “hen” as recorded in the VinQuettaParma Wiki (VQP). I would treat holyë “hen” as exclusively feminine, as opposed to ᴺQ. porocë which can be used both of hens and of chickens generally.