Of all clean birds ye shall eat. Which the Targum of Jonathan describes, everyone that has a craw, and whose crop is naked, and has a superfluous talon, and is not rapacious; but such as are unclean are expressed by name in the following verses, so that all except them might be reckoned clean and fit for food. Maimonides (p) observes, that only the number of the unclean are reckoned, so that all the rest are free. (p) Hilchot. Maacolot Asurot, c. 1. sect. 14.