What "kind" are penguins?

We get a little more guidance from Leviticus, Chapter 11: This passage certainly suggests that, at least by Moses's time, there were more than one Kind of hawk, of raven, of kite, and of heron. Also, Owl appears to be distinct from Little Owl or Great Owl, as are Eagle and Gier Eagle.Penguins aren't mentioned, but is it possible that they are a Fowl That Creeps, Going Upon All Four? (sounds like reading Winnie the Pooh, doesn't it?) I sure can't think of any other birds that could even get nominated for that Kind/those Kinds - kiwis and ostriches go strictly on All Twos to the best of my knowledge. Auks and puffins, maybe....

The guy that wrote Leviticus 11:13-20, quoted up there in message 7, knew quite a few. And neither do a bat's peculiarities keep it from being a bird, I presume? Or the peculiarities of "All fowls that creep, going upon all four?"

And I agree. But Leviticus specifically names bats as an unclean "bird" or "fowl." So I'm not the one with the "silly" here. Moses, maybe, but not me.

No. Birds (with probably several dinosaur cousins) and mammals seem to have arrived at it separately. Other archasaurs like crocodiles never were warmblooded.