Chullin 123
היה בקי בהן ובשמותיהן עוף הבא בסימן אחד טהור
To one who is familiar with these birds<span class="x" onmousemove="('comment',' I.e., the peres and the 'ozniah. These are the only unclean birds that have only one characteristic of cleanness.');"><sup>1</sup></span>
לא היה בקי בהן ובשמותיהן בסימן אחד טמא בשני סימנין טהור והוא שיכיר עורב
and their nomenclature any bird that has one characteristic [of cleanness] is clean; but to one who is not familiar with these birds and their nomenclature any bird that has one characteristic [of cleanness is unclean],<span class="x" onmousemove="('comment',' For it might be of the species of the peres or 'ozniah.');"><sup>2</sup></span>
עורב ותו לא
but that which has two characteristics [of cleanness] is clean; provided he recognizes the raven.<span class="x" onmousemove="('comment',' The raven is the only unclean bird that has two characteristics of cleanness.');"><sup>3</sup></span>
להביא את הזרזיר
They said to R'Eliezer: But the men of Kefar Tamratha in Judah used to eat it, because it has a crop!<span class="x" onmousemove="('comment',' And this is not one of the two characteristics of cleanness of the raven. V. Tosaf. ad. loc. vbck ,hbubx');"><sup>6</sup></span>
והלא אנשי כפר תמרתא שביהודה היו אוכלים אותן מפני שיש להן זפק
Another version reads: 'After its kind', that, says R'Eliezer, includes the white senunith.<span class="x" onmousemove="('comment',' Heb. , the white-bellied swallow, a species of raven; v. next note.');"><sup>7</sup></span>
אמר להם
They said to R'Eliezer: But the men of Upper Galilee eat it, because its gizzard can be peeled!<span class="x" onmousemove="('comment',' And this is not one of the two characteristics of cleanness of the raven. V. Tosaf. ad. loc. vbck ,hbubx');"><sup>6</sup></span>
אף הן עתידין ליתן את הדין
He replied: They shall indeed have to account for it in the future!<span class="x" onmousemove="('comment',' According to R. Eliezer, therefore, the species 'raven' includes other birds as the swallow and starling, consequently in the statement of R. Nahman it should be necessary for a man to recognize all those birds that are included within the species 'raven'.');"><sup>8</sup></span>
למינהו להביא סנונית לבנה דברי ר"א
Amemar said: The law is that every bird that has one characteristic [of cleanness] is clean, that is, if it not seize prey.<span class="x" onmousemove="('comment',' According to Rashi the meaning is, so long as it does not seize prey and it has in addition one characteristic of cleanness it is clean. tuvu According to Tosaf. (s.v.) the fact that it does not seize prey is the only characteristic of cleanness that it need Possess.');"><sup>9</sup></span>
אלא
Rab Judah said: A bird which scratches is permitted for use in the purification rite of a leper;<span class="x" onmousemove="('comment',' Cf. Lev. XIV. On the day of his cleansing the leper was required to take two living clean birds for Purification. The type of bird that scratches is not precluded, i.e., it is regarded as clean. The epithet 'scratch' is applied to a bird perhaps by reason of it peculiar beak, possibly the fissirostral birds, i.e., that have the beak broad and deeply cleft.');"><sup>10</sup></span>
עוף הבא בסימן אחד טהור והוא דלא דריס
Mar Zutra reports this passage as follows: As to the green-bellied senunith there is no dispute that it is forbidden; they differ only about the white-bellied kind, which R'Eliezer forbids and the Rabbis permit, and the law rests with the Rabbis.
א"ל רב אשי לאמימר
Now according to the version which reports the dispute [between R'Eliezer and the Rabbis] about the white-bellied kind it is right that it says above 'the white senunith'.<span class="x" onmousemove="('comment',' Supra in the statement of R. Eliezer.');"><sup>11</sup></span>
הא דרב נחמן מאי
But according to the other version which reports the dispute about the green-bellied kind, why is 'the white senunith' mentioned? - In order to exclude the black kind which nests in [eaves of] houses.<span class="x" onmousemove="('comment',' This type of swallow is certainly forbidden.');"><sup>12</sup></span>