Lévitique 1:16

And he shall remove its gullet and the contents thereof, and throw it by the eastern side of the altar in the place where they burn the cinders.

its crop The meaning of this word is known, and it is related to “Woe to the filthy” [Zephaniah 3:1]

with its [the crop’s] outer feathers i.e., with the bird’s outer feathers (as in, “full of feathers” [Ezekiel 17:3])

beside the Altar here the word means “outside the Altar”

to the east far away from the holy place

toward the ash-heap not just toward the ash-heap, but actually on it

AND HE SHALL REMOVE ‘ETH MURATHO B’NOTZATHAH.’ “Muratho refers to the place of the digested food, namely ‘its crop.’ B’notzathah means ‘together with its entrails.’ The word notzah is a term for anything which is loathsome. Similarly: for ‘natzu’ (they are become loathsome) and are wandered away. That is what Onkelos intended in translating ‘b’notzathah’ as b’uchleih (with its digested food). This is also the interpretation of Aba Yosei ben Chanan who said that he removes the stomach together with it [i.e., the crop]. But our Rabbis have said: he cuts out with a knife an opening around the crop like a flap, and removes it together with the feathers [on the skin].” This is Rashi’s language.
But it is not correct. For the word notzah in all places only means actual feathers. Similarly, for ‘natzu’ and are wandered away means that they have acquired feathers [wings] to fly away from their places and go into exile, and there too they will [constantly] wander, not finding a resting-place. Similarly: for ‘natzoh’ (she must fly away) and get away. is derived from the original root meaning “feathers” — hence: “she must fly away.” The Jerusalem Targum rendered [the above-mentioned verse: for ‘natzu’ and are wandered away]: “for they are ‘quarrelsome’ and have also wandered away.” The Targum thus derived the word natzu from the expression, when men ‘yinatzu’ (strive) together, and the verse is thus stating that “they strive with all the nations and wander away from them, and do not continue to live among them.” This is a correct interpretation. But the word notzah in the sense of “loathsome” as the Rabbi [Rashi] has it, is not found. The interpretation of Aba Yosei which made it incumbent upon the priest to take also the stomach with the crop, is [not because he considers the word b’notzathah to mean “the place of its entrails,” as Rashi understood him, but rather] because the crop and the gullet together with the stomach, comprising the organs for the digestion of food [in the bird], are all included in the term muratho, because in the stomach the food turns into r’ie (dung). Aba Yosei thus does not differ at all with the First Sage who says that he should take it with the “feathers,” for we have been taught in a Mishnah of the sixth chapter of Tractate Zebachim [with reference to the order of the …

מוראתו, the expression occurs both in Nachum 3,6 and in Tzefaniah 3,1, and in both of these instances it refers to a despicable spectacle. Here too, it refers primarily to the feces.

בנוצתה, feathers with its crop.