Much of the tri-state region is known as “flyover country” to most Americans, more than 90 percent of whom hail from within 100-200 miles of the east and west coasts, the highly urbanized and suburbanized population centers of the nation.
Visitors to this region generally remark at how bare and
stark the area seems, and often complain that there’s “nothing to do.” This is
hardly surprising, for those who live along the coastlines live in a land of
short horizons, buildings and forests, and constant swarms of activity.
There’s often a paradox involved when people talk about
flyover country or look at the Great Plains as a sea of nothingness. For a
great many of our urbanized and suburbanized coastal brethren are strongly
drawn to the “green” movement, and fear that we humans tread far too heavily on
nature. Yet they live in artificial enclaves where nature is largely
represented by zoo exhibits.
But to see a breathtaking glimpse of nature’s intricate
bounty, a visitor to our region need only drop his eyes from the magnificent
horizon and look closely at the vista opening at his feet.
The native prairie ecosystem of our region is more equal in
complexity to the most pristine rain forest. In fact, when you take seasonal
changes into account, the prairie is often more complex and more varied. On a
spring day, in the near distance from the tips of the toes to a mile, one can
see scores of grass and forb species, wildflowers galore, hundreds of birds,
and with careful observation, many species of mammal ranging in size from the
tiny vole to the magnificent Bison. Insects of every shape, color and size clot
every square meter of ground and buzz about the nearby air their thousands.
Beneath the surface, plant and animal life is equally abundant and varied. But
there’s one thing more. Reptiles and amphibians.
Josh Mead, UNL Herpetology Assistant, holds an adult male Short-horned Lizard (Phrynosoma hernandesi) Sunday during an expedition to western Nebraska. |
A pair of UNL researchers visited a ranch in Kimball County
Sunday and came away with a good deal of data on, and more than a few specimens
of, the southwest Panhandle’s reptile population. Over the course of six hours,
they covered more than three square miles and collected lizards, skinks and
snakes, as well as data on sightings, weather conditions and environmental
topography and condition.
Josh Mead, UNL Herpetology Assistant, and Dennis Ferraro, UNL Herpetologist, collect a specimen Sunday during an expedition to western Nebraska. |
Dennis Ferraro, an Extension Educator and University of
Nebraska’s Herpetologist, who led the excursion, said, “My main goal in my
career and in life is the conservation of amphibians, reptiles and turtles in
North America.” Ferraro maintains the university's live animal lab of native
Herpetofauna – that’s reptiles and amphibians – for research and educational
purposes.
Dennis Ferraro, UNL Herpetologist, collects a skink Sunday during an expedition to western Nebraska. |
As UNL’s herpetologist, Ferraro sometimes gets unusual
calls. “The State Patrol called me last year to the scene of a meth-lab they
had busted back east. The criminals had hidden their stash of drugs in a fish
aquarium and thrown a half-dozen rattlesnakes in the tank on top of the drugs.
Of course they didn’t care for the snakes and they were half-dead from
malnutrition, but I was able to collect them and the police got the drugs.
Josh Mead, UNL Herpetology Assistant, holds an adult skink Sunday during an expedition to western Nebraska. |
Accompanying Ferraro was senior Fish and Wildlife studies
major and UNL herpetology assistant Josh Mead from Kearney, Neb. “I love this
stuff,” he said, “absolutely love it.”
Dennis Ferraro, UNL Herpetologist, shows of an earless lizard Sunday during an expedition to western Nebraska. |
The main goal of the pair in Kimball County was to collect
data on, and specimens of, male and female Short-horned Lizards (Phrynosoma
hernandesi), commonly known as “horny toads” or “horned toads.” The
Short-Horned lizard is a reptile, of course, and not a toad, which is an
amphibian. The lizards are ubiquitous across our tri-state region, though not
often seen due to their excellent camouflage.
A female Prairie Rattlesnake(Crotalus viridus), held safely and comfortably by snake tongs by a UNL herpetologist Sunday during an expedition to western Nebraska. |
The Short-horned Lizard
features a broad, flat body typically about 10 centimeters (cm) in
length as adults. Newborns and young have the same body shape but are quite small,
from 2 cm shortly after birth to nearly 4 cm at first hibernation. They have
short, pointed spines at the back of the head, with spiny scales along the back
and sides. They are quite colorful with patterns of black, brown, green, gray
and white, but their coloration blends so well with their environment they are
hard to see when they are still. Coloration and markings often vary
considerably from location to location.
They are viviparous, non-placentropic reptiles, which means
that the female retains the eggs inside her body until fully developed, when
they hatch and emerge as live young. Most reptiles lay eggs in nests.
Viviparous reptiles, said Ferraro, are thought to have adapted the internal
carriage of eggs due to sharp day-night temperature changes across the region.
In our area, externally nested eggs might not survive. Though reptiles are
exothermic, or cold-blooded, sun basking and normal activity make the inside of
the lizard’s body a more consistent and reliable place for the eggs to develop.
Dennis Ferraro, UNL Herpetologist, inserts a tracking tag under the skin of a female Prairie Rattlesnake (Crotalus viridus) Sunday during an expedition to western Nebraska. |
In addition to collecting Short-horned Lizards, the pair of
researchers also collected a number of skinks, an earless lizard, and several
snakes.
“We’ve had a female Prairie Rattlesnake (Crotalus viridis)
in our collection,” said Ferraro, “since 2002. Unfortunately, she developed a
tumor on her head and though we removed it, the carcinoma was malignant and is
growing back, She’s still eating, but I’m afraid we’ll lose her soon, so we’d
really like to find a replacement.”
Ferraro and Mead had collected a male Prairie Rattlesnake
the night before near Benkelman, Neb. Ferraro said he travels about 50,000
miles each year, crisscrossing the state in search of data and specimens.
In the first location they chose to search for rattlesnakes,
they found and adult Prairie Rattlesnake under the first piece of debris they
turned over. Quickly securing the snake with snake tongs, the pair prepared to
examine, tag, and measure the animal.
The operation is quite intricate, and begins by carefully
placing the head and front half of the snake inside a narrow, clear plastic
tube. In this fashion the snake is both protected and it’s dangerous head is
contained.
With Mead’s assistance, Ferraro quickly examined the snake
and determined that it was a female. The initial determination is made by
counting the number of ventral scales between the vent, or cloaca, and the base
of the rattle. Twenty-four or more indicate a male, 22 or less indicate a
female. This snake had 23, so Ferraro carefully probed the cloaca and verified
the snake was indeed female. “She’s probably gravid (pregnant), too,” he said
with a big smile on his face.
Ferraro then inserted a tiny tracking chip just under the
skin of the snake along its side. This chip can be read by a handheld device to
verify the snake’s identity. In this case, the snakes new name is
985121012679829.
Josh Mead, UNL Herpetology Assistant, plays with a friendly bullsnake (Pituophis catenifer) Sunday during an expedition to western Nebraska. |