Deuteronomy 14:19 Meaning

17And the pelican, and the gier eagle, and the cormorant,

18And the stork, and the heron after her kind, and the lapwing, and the bat.

19And every creeping thing that flieth is unclean unto you: they shall not be eaten.

20But of all clean fowls ye may eat.

21Ye shall not eat of any thing that dieth of itself: thou shalt give it unto the stranger that is in thy gates, that he may eat it; or thou mayest sell it unto an alien: for thou art an holy people unto the LORD thy God. Thou shalt not seethe a kid in his mother's milk.