Reference for Chullin 45:5

כל מקום שנאמר השחתה אינו אלא דבר ערוה ועבודת כוכבים

- it might well be argued that whatever is rendered unfit for sacrifice by reason of a blemish will similarly be rendered unfit by reason of sexual perversion or idolatry, and, on the other hand, whatever is not rendered unfit for sacrifice by reason of a blemish will not be rendered unfit by reason of sexual perversion or idolatry, with the result that birds, inasmuch as they are not rendered unfit for sacrifice by reason of a blemish<span class="x" onmousemove="('comment',' Minor blemishes do not disqualify a bird for sacrifice though a major blemish e.g., the loss of a limb, does.');">⁵</span>

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