Reference for Chullin 40:7

ואפי' למאן דאמר כבהמה לענין עיקור לא ליהוי כבהמה

Furthermore, even according to him who obtains this result by analogy with cattle,<span class="x" onmousemove="('comment',' By reason of the juxtaposition of the words 'cattle' and 'birds' in Lev. XI, 46: This is the law of cattle and of birds, the result is obtained that birds require shechitah. V. infra 27b.');">³</span>

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