....other than the apparent inability to judge speed and/or closure rate on
vehicles moving at those speeds.

"apparant" is not the same as "actual". Deer get hit by cars. That is
the observable fact. There are many possible explanations which do not
involve "inability to judge speed...". The standard explanation is that
they freeze in the headlights (I've seen that). They are not paying
attention because they are in rud (I've seen that - it applies to people
too btw). They expect the car to jump out of the way, like an animal
might (I have no way of knowing whether this is true or not). There are
probably scores of others.

But I have observed, and asked, and
received what seemed a plausible explanation
from a person who had studied
wildlife...

That's a good start, but the question remains open. It's merely a
=plausable= explanation. If it is disprovable by experiment, it would
even qualify as a scientific theory. But that's all. To test the
theory you'd reasonably need to test their ability to judge speeds, and
see if there is a correlation between those their (varying) abilities
and their (varying) rates of impact. I don't think such a study has
been done, and it doesn't sound easy.

Do you
have any of that confirmed information, Jose? If not, then you're no
better off than I am, are you?

I am better off, because I know that I don't know.

Jose
--
The monkey turns the crank and thinks he's making the music.
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