Yes, of course they do. But imagine anyone asking such a question years ago for any purpose except to show that it ain’t so: Stamp OUT Darwin Doubt!! was the permitted approach.
Yet now we read stuff like this:
hat is a species? It’s a question that has agonized scientists since well before Darwin. With some exceptions, the thinking has landed on an evidently firm reproductive barrier: Members of different species don’t mate. If they do, their offspring are sterile and can’t contribute to future generations. The reproductive barrier has thus created a useful demarcation of “what is a species”—until a deep dive into butterflies showed otherwise.
Researchers recently analyzing the genomes of every butterfly species in the United States and Canada—845 in total—have revealed that at critical evolutionary intervals, butterfly species have crossed the reproductive barrier, mating with other species of butterfly and thereby transferring genes from one species to another. Hybridization, it turns out, plays a pivotal role in how life forms evolve. The tree of life may never look the same.
Mary Ellen Hannibal, “Do Butterflies Challenge the Meaning of Species?” at Nautilus
And it feels normal.
Don’t tell us things aren’t changing. They are.
See also: Researchers: How Butterflies Develop The Same Wing Color Via Different Paths “Forever Changes The Way Evolution Is Understood.”
and
Darwinism is dead and the butterflies did it
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