[Buck W.]

“...and famously declared that Kurds were actually “mountain Turks.””

One Kurd leg is shorter than the other?

[muawiyah]

Having asked the question of both ethnic Kurds and ethnic Turks many times over the years, I think it's safe to say that the Turkish and Kurdish populations are fairly well overlapped in muchof the Eastern half of Turkey.

They differ in their occupations and lifestyles. The Kurds are classically herders and subsistence farmers and live in the highlands, and the Turks are large scale agriculturalists and live in the lowlands.

They are separated by language and tradition.

I'm pretty sure DNA analysis would reveal them to be essentially the same folks.