Tuesday December 11th 2012
A current view suggests the asteroid that killed off
the Dinosaurs sixty five million years ago, did a similar damage to all
terrestrial species with a body weight of over one pound. Quite
how this scholarship measured its conclusion I couldn't find out.
More convincing to the gist of their theorizing perhaps, are the species
that either do or do not achieve a body mass of more than one pound.
A bathroom scale would for example require about eight very well fed
Mockingbirds perched calmly upon it to measure one pound. And when
the Mockingbirds had had their turn on the bathroom scale, a person
would have to corral between eighty and a hundred Ruby Throated
Hummingbirds to achieve a one pound reading.
A Kestrel, averages around one pound and
four ounces, so he'd be right on the edge of becoming extinct. But an
Eastern Screech Owl, who can trill the daylights out of a person, and when
it's dark can sound as though he has the intention of dining upon somebody's
spine, usually weighs just under a pound. A Bald Eagle is up there
with a twelve or thirteen pound Turkey, and he'd certainly not make it
through an Asteroid Winter. Nor would an Ostrich. A boy Ostrich,
who is well fed and proud, can weigh up to thirty thousand Hummingbirds, and
when he looks around he can be almost seven feet tall.