
if you were to go to
the American Southwest
a long time ago, before the
Grand Canyon was a canyon,
when the Colorado River was
just kinda going through
and wasn't a major barrier,
there was a parent species,
an ancestral species to
both of these characters
that lived on both sides of the river.
And on different times of the year,
it was able to get across the river,
it's able to, the squirrels on the north
and the squirrels on the south
were able to interbreed and
produce fertile offspring,
so they were all one species.
But over time, the Colorado River
started to erode more
and more soil and rock,
and so this became what we now consider
to be the Grand Canyon.
And so over time,
this became a very significant
geographic barrier.
No longer could, before
they could travel across,
but once it became the Grand Canyon,
it became very difficult or



Alexander Stewart, 1st Earl of Buchan, but more commonly known as the Wolf of Badenoch, lived from 1343 to - depending on the source you choose - 24 July 1394. He was the fourth illegitimate son of the future King Robert II of Scotland and of Elizabeth Mure of Rowallan, but became legitimated in 1349 upon his parents' marriage: he was also the younger brother of the future Robert III. The wider picture in Scotland at the time is set out in our Historical Timeline.

Scottish history has its fair share of deeply unpleasant characters, but Alexander Stewart, 1st Earl of Buchan is a strong contender for the title of least pleasant of the lot, another contender being his brother Robert Stewart, 1st Duke of Albany. But for very