Rashi on Leviticus 11:13/רש"י על ויקרא י״א:י״ג

1לא יאכלו THEY (the fowls to be mentioned) SHALL NOT BE EATEN — The prohibition is put in this form and not in the words “Ye shall not eat them” (v. 42) to declare liable to punishment those who give them as food to minors, the latter themselves not being liable, for the following is what it implies: They shall not be eaten through any act of yours. But perhaps this is not the meaning, but the words are intended to prohibit any beneficial use to be made of them? It says, however, in reference to a similar case (v. 42) “Ye shall not eat them” — for eating they are forbidden, for any other use they are permitted! And the same is the case here (cf. Sifra, Shemini, Chapter 5 1; Zevachim 114a). — In reference to every fowl of which it is stated למינהו ,למינו ,למינה, “after its kind”, there are in that species some that are not alike one to the other either in their color or in the names they bear, and yet they are all one species.