What’s a Corvus?

PeekingCrow

The short answer: crows and ravens are members of the genus Corvus.

Bird people refer to them as corvids, because they belong to the family Corvidae, as do magpies, jays, rooks, nutcrackers, jackdaws and a few others.

Of the corvids, only crows and ravens roost under the genus Corvus. Many species of crows and ravens fly the blue skies of Earth, but in the U.S., it’s all about the American Crow (Corvus brachyrhynchos) and the Common Ravens (Corvus corax).

Raven or Crow?

Though they look a lot alike, crows and ravens are not of the same species, therefore they don’t mate.

Generally ravens are bigger than crows, but unless they’re hanging out together, which they do sometimes, it’s hard to tell them apart by size. Their beaks and tails are distinctive. Raven beaks are thicker and curvier than crow beaks, and their tails are wedge-shaped, as opposed to a more ‘blunt cut’ of the crow tail.

crow-ravenfile

Corvid Speech

Raven speech sounds different than crow speech. I prefer ‘speech’ to ‘calls’, because I believe they are conversing, though we don’t hear most of what they’re saying. So does Michael Westerfield, by the way, noted corvid researcher and author of Language of Crows.

Raven speech sounds more like a croaking trill. (http://www.shades-of-night.com/aviary/sounds/raven1.wav)

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AmericanCrowCrow speech to us sounds like a series of ‘caw’ sounds. (http://www.shades-of-night.com/aviary/sounds/crow2.wav)
AmericanCrow
(Corvus brachyrhynchos)

We Go Way Back…

Corvus is one of the oldest constellations in human history and resides within a group of constellations, the Crater, Hydra, and Sextans. In the Greek myth, Apollo flung the disobedient Corvus into the night sky in a fit of rage, where the thirsty Corvus gazed forever at the Crater–a two-handled cup full of water, guarded by the water snake Hydra. (Sextans is not part of this myth). (http://ow.ly/mBwtb)

urania32Corvus

The elements of the story have become obscure, but the age of the story–Aesop told it–illustrates the antiquity of the Human/Corvus relationship. Revered and reviled by gods and mortals, we are not the boss of them.

Bones of Earth, Bones of Clay

I’m fascinated by bones…all bones, especially the white bleached remains of the wild creatures picked clean of all flesh, marking the place where they lay down on the Earth and died.

I am not alone….

full-scale-t-rex-built-near-the-seine-river-paris-designboom-01Bones of Metal

French artist Phillipe Pasqua designed and fabricated this full-scale, 21 foot tall Tyrannasauras rex sculpture. Comprising 350 bones of chrome and aluminum, the Lizard King towers over the Seine River in France. (Click here for more…)

Bones of Rock

Speaking of T-Rex, a rare nearly complete fossilized skeleton heads for the Smithsonian as the centerpiece for the new dinosaur hall. <more here…>r-T-REX-SMITHSONIAN-large570

In other bones, Paleontologists recently excavated the fossilized tail of a 72-million year old hadrosaur in the northern desert of Mexico. Discovered by locals, the scientists unburied fifty remarkably well-preserved vertebrae. From these bones, scientists determined the dinosaur suffered from arthritis and tumors (Click here for more…)

DinoBones of Clay

From molten origins of Igneous rocks, whose feldspars undergo weathering and disintegration at Earth surface, forming a variety of clay minerals that, thankfully, blanket much of Earth’s surface.

I too am descendent from Firstborn Earth. I know this clay. It is me.

During one muse-filled summer break from teaching geology, a series of ceramic sculptures, whose central theme of twisted spinal columns sprang to life beneath my hands, telling tales of my own origins, my vertebrate ancestry. My own bones.

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Cylinder Series, #1-22, after the bisque
Summer 2004
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Detail, Cylinder Series, #19
Mary C Simmons

Our evolutionary paths cross, clay and I, in a moment of geologic time-the instant in which I so briefly live. I witness a distant past and participate in this miraculous path of life upon which my hands and this clay chanced to meet.

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Cylinders Series, #23
Mary C Simmons