Parashas Vayikra · Aliyah 2 · Passuk 17
Chabad.org — English translation + Rashi
Torah Temima points to Shabbos 108a (verified; skin of the bird olah goes on the altar).
English: “With its wings” — to include the skin.
R’ Eliezer #1 (ריבוי) — bichnafav expands to the skin.
Unlike animal offerings (hide removed for the kohanim), the bird olah’s skin goes up with it on the altar.