TT #262 · Parshas Shemini · Aliyah 7 · Passuk 46
Chabad.org — Vayikra Chapter 11 with Rashi
English: “The animal and the bird”: Scripture places the bird between animals and fish: an animal has two identifying signs, a bird one, and fish two.
Chullin 27b.
E-Daf.com — Chullin 27b (Tsurras Hadaf)
Textual classification — The Chazal applies the verse’s wording and structure to establish the stated teaching.
The bird is placed between beast and fish: its preparation for eating requires one slaughtering sign.