And these are accounted treifah in fowl: [A fowl] whose esophagus is punctured, [or] whose trachea is severed, [if] a weasel struck it on the head in a place where it renders it treifah, [if] the gizzard was punctured, [if] the intestines were punctured. [If] it fell into a fire and its internal organs were scorched: If they turned green, they are unfit; if they are red, they are fit. [If] one trod on it or knocked it against a wall, or [if] an animal crushed it and it flutters, and it remained alive for twenty-four hours and he slaughtered it, it is fit.

And the following are kosher in fowl: [If] the trachea was punctured or slit, [if] a weasel struck it on its head in a place where it does not render it treifah, [if] the crop was punctured — Rabbi says: Even if it was removed; [if] its intestines came out and were not punctured, [if] its wings were broken, [if] its legs were broken, or [if] its feathers were plucked. R’ Yehudah says: [If] the down was removed, it is unfit.