"microevolution" which is understood to be the normal variation within a Biblical Kind.
And has been known to be that (among YECs that post on the internet) for a reasonable proportion of the eleven years that I've been following the argument. Dwise1 can amplify on this, but, as of 2002 or so, most YECs denied that "microevolution" existed at all. "Variation," maybe, but not anything with that E-word mixed in. That was the very spawn of Satan back in those olden days. Your dictionary has been mentioned recently around here, Faith: how fast does it spin, again?
"The Christian church, in its attitude toward science, shows the mind of a more or less enlightened man of the Thirteenth Century. It no longer believes that the earth is flat, but it is still convinced that prayer can cure after medicine fails." H L Mencken