Reference for Chullin 89:10

אמר רבה בר בר חנה א"ר יהושע בן לוי

What is the test in the case of a bird?<span class="x" onmousemove="('comment',' If there were several holes in it with loss of substance, or if a strip of the windpipe was removed. The measure of an issar obviously cannot apply to a bird too, since the entire width of its windpipe does not amount to an issar.');">⁷</span>

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