Big, Bad Snake Ban?

  • It’s estimated there are already hundreds of thousands of pythons, anacondas and boa constrictors breeding in the Florida Everglades. (Photo Courtesy of US Fish and Wildlife Service)

The Fish and Wildlife Service wants to stop people from bringing giant snakes into the country. Rebecca Williams reports pythons, anacondas and boa constrictors are getting a little too comfortable in the U-S:

Transcript

The Fish and Wildlife Service wants to stop people from bringing giant snakes into the country. Rebecca Williams reports pythons, anacondas and boa constrictors are getting a little too comfortable in the U-S:

It’s estimated there are already hundreds of thousands of pythons, anacondas and boa constrictors breeding in the Florida Everglades.

Ken Warren is with the Fish and Wildlife Service. He says some of the snakes can get up to 20 feet long and 300 pounds. People buy them in pet stores and some release the snakes when they get too big.

It’s become a noticeable problem in the last 15 or 20 years. But the Fish and Wildlife Service is only now starting the process to ban the importation of these snakes.

“It takes a while before you realize the threat. As soon as the threat became pronounced and identified we started to look at the various actions we could take to help get it under control.”

He says it’s getting to be a bigger problem because the snakes are eating endangered species.

For The Environment Report, I’m Rebecca Williams.

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‘Beefalo’ vs. Buffalo

  • Some American bison are contaminated with cow genes. The genes are left over from the early days of cross-breeding. (Photo by Paul Frederickson, Courtesy of Wikimedia Commons)

In iconic images of the Great Plains, you always see the land dotted with bison. Those bison helped make the prairies what they were. But the bison that you see on prairie preserves today are not exactly the same as the ones that once roamed the plains. The Environment Report’s Charity Nebbe has more:

Transcript

We have a handful of ranchers to thank for the fact that we have any bison today. At one point there were only about a thousand and now there are half a million. Bob Hamilton is the Director of the Tallgrass Prairie Preserve in Oklahoma. He says the ranchers who saved the bison also put them at risk.

“Part of their motivation was also to see if they could cross breed bison with domestic livestock to see if they could produce a hardier winter resistant ‘beefalo’.”

The beefalo were not hardy and the ranchers abandoned their project, but the cattle genes remain. Bob Hamilton’s herd consists of 2,700 bison. Thanks to genetic testing, Hamilton has been able to weed out all of the bison carrying the most damaging kind of cattle DNA. But, there is some genetic material he just can’t get rid of. Chances are, there will always be a little bit of beef in the buffalo.

For the Environment Report I’m Charity Nebbe.

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Lead Poisoning and California Condors

  • Adult California Condor in flight (Photo courtesy of the US Fish and Wildlife Service)

It’s been decades, but there are now more California Condors in the wild than there
are in captivity. That’s thanks to two condor chicks who recently left their nests in
the Grand Canyon. As Sadie Babits reports, biologists are thrilled, but one of the
problems that caused the decline in condors still exists:

Transcript

It’s been decades, but there are now more California Condors in the wild than there
are in captivity. That’s thanks to two condor chicks who recently left their nests in
the Grand Canyon. As Sadie Babits reports, biologists are thrilled, but one of the
problems that caused the decline in condors still exists:


At the World Center for Birds of Prey in Boise, Idaho, there’s a wood fence that
protects the California Condors that live behind it.

“Just lately in order to minimize the exposure of our adult breeding pairs to humans,
we’ve built this security fence or actually it’s a visual barrier, we call it.”

That’s Bill Heinrich. He overseas the California Condor Recovery program at the
Center.

There is this one small break in the fence – a part that hasn’t been built yet. And
behind some chain link, I can see some very large birds…

Sadie: “Is that a Condor right there??”

Bill: “Yeah… you can see an adult condor standing, a pair of them on a perch.”

Sadie: “Ooohhhh!”

Bill: “You can kind of get an idea of just how big they really are.

Sadie: “They’re huge!”

Bill: “They weigh anywhere from 18-25 pounds and have close to a 10 foot wingspan.”

In the early 1980s the California Condors almost went the way of the Dodo –
extinct. Only 22 of these birds remained in the wild.

The big birds were killed by hunters. They died from lead poisoning after eating
animals killed with lead bullets. And their own genetic makeup didn’t help much
either.

These birds, shall we say, have a low sex drive. Rather than produce chicks every
year and gamble that they’ll survive, condors lay one egg every other year. That
hasn’t worked so well.

So biologists thought they’d help. They started capturing the endangered condors to
begin a captive breeding program. In 1987, the last wild bird was caught.

Bill Heinrich recalls there was plenty of controversy over that decision.

“People thought well you should let them go extinct with dignity or you can try to
breed them in captivity but you might fail and then you would have lost them in the
wild that much quicker.”

But the move saved the birds from being killed by hunters or from eventual lead
poisoning.

And, the breeding program, well, let’s just say the numbers speak for themselves.
Down to 22 birds in 1987, today there are now 327 California Condors. And more
than half of those birds are back in the wild.

Bill Heinrich says next spring some of these condors will be released some where
around the Grand Canyon in Arizona.

That’s where the birds will once again be exposed to one of the factors that lead to
their decline. It’s not hunters these days. The birds are protected by the Endangered
Species Act. But lead poisoning. Condors feed on gut piles and carcasses left by
hunters. If a hunter uses lead bullets, the bullet will explode sending tiny fragments
of lead through the meat. It’s enough to make a condor sick. Heinrich says lead
poisoning remains the single biggest threat to the birds.

“You know if hadn’t been for the lead issue coming up, I would have thought, I
didn’t have any reservations about it being successful until the lead problem cropped
up.”

Every year, biologists have to test the birds for lead poisoning. They’ve been working
with the Arizona Game and Fish Department to hand out free non-lead bullets to
hunters in the area. Last year, not a single condor died from lead poisoning. This
year, biologists have had to treat six birds, all of which are expected to make a full
recovery.

In California, the state has banned lead ammunition because of the lead poisoning
concern. But hunters don’t think lead bullets are a real problem, and they really
don’t want to pay for different kinds of bullets because that is a lot more expensive.

For The Environment Report, I’m Sadie Babits.

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Snakes in Suburbia

  • The timber rattlesnake has been wiped out in several states in the East and Northeast and is not doing well in the Midwest. (Photo by David Larson, Saint Louis Zoo)

Scientists are worried that
snakes living in sprawling areas could be affected.
In one region, researchers have implanted dozens of
snakes with radio transmitters. Julie Bierach reports, it’s part of an effort to prevent a
decline in the snake population and educate people
that they can live with them:

Transcript

Scientists are worried that
snakes living in sprawling areas could be affected.
In one region, researchers have implanted dozens of
snakes with radio transmitters. Julie Bierach reports, it’s part of an effort to prevent a
decline in the snake population and educate people
that they can live with them:


Wayne Drda loves snakes:


“I think they’re really neat animals.”


In this wilderness area, Drda and his team are studying the basic movement patterns and habitat use of
Timber rattlesnakes and Osage copperheads:


“A lot of the wildlife areas, are being surrounded by subdivisions and homes, and some are
completely surrounded. And so the animals tend to wander out of the wildlife areas into
backyards and many of them don’t survive that.”



The timber rattlesnake already has been wiped out in several states in the East and Northeast. And the
timber rattler is not doing very well in many states in the Midwest. Drda says snakes in general get a
bad rap. A lot of people don’t like them, so otherwise peaceful people can turn into what he calls “nature
vigilantes,” and they kill snakes on sight:


“Well, I guess the most common way is with a shovel. That’s always the common joke, the
shovel. (Laughs)”


Drda wants to prevent that from happening as often in his area. He’s the field manager for the Pitviper
Research Project at Washington University’s Tyson Research Center near the suburbs of St. Louis,
Missouri. He’s trying to help suburbanites understand that the Timber rattler is a much less aggressive
species of rattlesnakes.


Drda and his team have implanted 26 snakes with the radio transmitters, and track them daily using a
GPS system. Ryan Turnquist is one of the students tracking the snakes:


“And basically we use that to map it on an area photo and determine how far the snake moved,
where the snake moved, what kind of habitat they used, home range size.”


On this day, they’ve already tracked 8 snakes. And now, they’re on their way to find another. Turnquist
turns on the GPS system. And we begin to plow through the woods. Each snake has been named and assigned its own frequency on the transmitter.
The 4-foot-long male rattlesnake we’re tracking has been named Aron.


As we get closer, the signal gets stronger. Turnquist leads the way pointing the big steel antenna in
several directions. And then, we see him. Aron is lying in the sun, half coiled, near a log . He blends in
with the pile of leaves that surround him. He doesn’t rattle, but instead is still, hoping we don’t see him.
Wayne Drda has been studying snakes for 40 years. He knows what Aron is up to:


“This snake is probably in the most conspicuous situation you can find him in, except being out in
the road. He’s not going to give away his position by doing anything until he feels like he’s
really threatened. I mean he knows we’re here, but he’s probably not going to rattle.”


That happens a lot more often than you expect. Drda says they’ve already tracked some snakes that
have made their way to backyards of homes in the area. And the homeowners don’t even know it:


“We’ve been trackin’ this one snake, her name is Hortence. She’s basically been in somebody’s
backyard now for three weeks I guess.”


So far, the team has learned that the male timber rattlers have a larger home range. They breed in late
summer, or early fall, and they never breed with females from the same den where the males hibernate.


Jeff Ettling is with the St. Louis Zoo. He’s conducting a DNA analysis to determine which areas need to
be kept open so the snakes can travel back and forth without running into someone with a shovel:


“If we can get enough samples within a given area, we should be able to tell what the relatedness is
and which males are moving between dens. That’s what we’re hoping to find out. I mean, we have a good
idea by tracking them where they go. But which females are they breeding with from different
dens we really don’t have any idea right now.”


The research team is finding new scientific information about the snakes. But, they say the ultimate
goal is to explain to the people who live in the area that you can live with the rattlesnakes. They don’t
have to kill them. Drda wants people who find a timber rattler in their backyard to call a herpetologist,
instead of running for the shovel.


For the Environment Report, I’m Julie Bierach.

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Eagles to Fly Off Endangered List?

  • Since bald eagles have reached their highest numbers since World War II, they might be removed from the endangered species list. (Photo courtesy of USFWS)

Bald eagles could be taken off the endangered species list soon.
Rebecca Williams reports bald eagles have reached their highest numbers
since World War II:

Transcript

Bald eagles could be taken off the endangered species list soon.
Rebecca Williams reports bald eagles have reached their highest numbers
since World War II:


The U.S. Fish and Wildlife Service says there are just under 10,000
breeding pairs of eagles in the lower 48 states. That’s up from a
record low of just 400 breeding pairs in the 1960s.


For many years, eagles were seen as predators and shot. After World
War II, the pesticide DDT weakened the birds’ eggshells… so they
couldn’t reproduce.


Valerie Fellows is with the U.S. Fish and Wildlife Service. She says
they’ll decide whether to take the eagles off the endangered species
list by the end of June:


“We can determine at any point if populations start to plummet,
that we can re-list them and add them
to the Endangered Species Act.”


Fellows says bald eagles also have other safety nets. They’re
protected by several federal laws that make it illegal to kill or harm
the birds.


For the Environment Report, I’m Rebecca Williams.

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Searching for Elusive Eastern Cougar

The U.S. Fish and Wildlife Service plans to look at
whether the eastern cougar exists. The agency will be
looking in 21 states from Maine to Michigan, and down
to Tennessee. As Linda Stephan reports, the review
could end with a recommendation to remove its
endangered status:

Transcript

The U.S. Fish and Wildlife Service plans to look at
whether the eastern cougar exists. The agency will be
looking in 21 states from Maine to Michigan, and down
to Tennessee. As Linda Stephan reports, the review
could end with a recommendation to remove its
endangered status:


Officials have long presumed that the Eastern cougar
is extinct, and they say it’s not probable they’ll
find evidence of the large, evasive cat east of the
Mississippi in this review.


Mike DeCapita says it’s more likely officials will
find there never was an Eastern cougar that’s any
different from the cats found in Western states. He’s
a wildlife biologist with the U.S. Fish & Wildlife
Service:


“The next question then after that would be, does the
cougar subspecies, the single subspecies in North
America warrant listing? And my speculation would be
that it doesn’t.”


The official assumption is that there are no cougars
of any type breeding in these states, and that’s been
controversial.


Several citizen groups say there’s evidence to suggest
some are living in the wild east of the Mississippi,
and possibly breeding.


For the Environment Report, I’m Linda Stephan.

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Farmers Upset With Opportunistic Cranes

  • Environmentalists are happy to see that sandhill crane populations are increasing. Some farmers, however, are not. (Photo courtesy of the U.S. Fish and Wildlife Service)

At this time of year, one of the nation’s most exotic birds is nesting, and many wildlife lovers are rejoicing. Once close to extinction, the Eastern population of sandhill cranes has grown dramatically. In fact, their numbers are so big that they’re becoming a problem in some places – and there’s talk of starting a hunting season for cranes. The Great Lakes Radio Consortium’s Sandy Hausman has the story:

Transcript

At this time of year, one of the nation’s most exotic
birds is nesting, and many wildlife lovers are rejoicing. Once
close to extinction, the Eastern population of sandhill cranes
has grown dramatically. In fact, their numbers are so big that
they’re becoming a problem in some places – and there’s talk of
starting a hunting season for cranes. The Great Lakes Radio
Consortium’s Sandy Hausman has the story:


(Sound of marsh and birds)


It’s a cool spring morning, just before dawn. Brandon Krueger is watching a stretch of marshland along a country road in Central Wisconsin. Krueger works for the International Crane Foundation. He’s taking part in the annual Midwest crane count. Celebrating its thirtieth year, thousands of volunteers have fanned out across parts of Wisconsin, Michigan, Minnesota, Illinois and Iowa to look and listen for sandhill cranes.


“It’s a great sound to hear when you’re waking up. This is usually the earliest that I ever get up during the year. It’s a real struggle, but it can be worth it – for some of the things that you hear and the opportunity to see cranes.”


(Sound of crane call)


Krueger hears a breeding pair a half a mile away – exchanging what’s known as a unison call. The birds are big – up to five feet tall. A hundred years ago they made easy targets for hunters. In the 1930’s, naturalist Aldo Leopold lamented the loss of cranes – nearly hunted to extinction in Wisconsin. He knew of only 25 breeding pairs of sandhills in the state. But the federal government made it illegal to hunt cranes, and the state started working to restore bird habitat. Today, crane lovers celebrate an impressive comeback.


“I’ve talked with our leading field ecologist and he’s estimated upwards of forty-thousand sandhill cranes in the Midwest area.”


This year’s crane count is still being tallied, but Krueger heard nine birds and saw three flying by.


(Sound of cranes)


In the county next door, Troy Bartz claims to see many more birds than that on a daily basis.


“I’ll come home and it’s nothing for me to see two, three-hundred cranes in a field in one crack.”


Bartz has been farming for 13 years – growing corn, soy beans and alfalfa on nearly a hundred acres near Nina Creek.


(Sound of plow)


“Plants started disappearing out of the field with crane tracks right next to them. They go right down the row and they pull the shoots out of the ground and eat the kernels off the roots. I lose thousands of plants every year.”


The International Crane Foundation says damage in Wisconsin alone could total $100 million, and for family farmers, a year’s profit could be lost.


Bartz: “On the small acreage that I’m tilling, you can’t lose thousands of plants and not have some kind of an impact. That’s hundreds and hundreds of bushels I’m losing.”


Hausman: “And what’s the cash value on that?”


Bartz: “I figure anywhere between two to three-thousand dollars minimum every year.”


Hausman: “So what do you think the answer is?”


Bartz: “Shoot ‘em.”


Hausman: “Really?”


Bartz: “Yeah!”


There is some talk of having a hunting season for cranes, but that would require approval from the U.S. Fish and Wildlife Service, and many critics say the eastern population of sandhills is too small to permit hunting. The Wisconsin Department of Natural Resources says there are alternatives for farmers – machines called banger guns that make explosive sounds every few minutes. Troy Bartz’ neighbor, Mel Johnson, tried that, but found the birds quickly got used to the noise.


“The DNR warden brought the guns out. He said the best way is to mix a few regular shells in with it, he said, because it won’t scare ‘em away, the guns. He’s been taking them out for years, and he said they won’t scare any wildlife away – them guns.”


They’ve also tried scarecrows and colored ribbons but they didn’t work either. Farmers have had success with a product called Kernel Guard – a pesticide that made corn seeds taste bad to cranes, but this year the manufacturer stopped making it because one of its active ingredients can be toxic. Crane advocates are now asking the EPA to allow use of another chemical that’s already sprayed on golf courses to repel geese, but approval is not expected this year.


(Sound of cranes)


So crane lovers are keeping their fingers crossed – hoping farmers won’t be breaking the law by shooting the birds.


For the GLRC, I’m Sandy Hausman.

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Study Finds Food Less Nutritious

  • Vegetables are a great way to get vitamins and minerals. But studies show techniques for faster-growing and bigger vegetables could be producing plants that actually have less of these health benefits. (photo by Justin Richards)

Vegetables are less nutritious than they were 50 years ago. That’s according to a new study that tested 43 different garden crops. The Great Lakes Radio Consortium’s Chris Lehman reports:

Transcript

Vegetables are less nutritious than they were 50 years ago. That’s the finding of a new study that tested 43 different garden crops. The Great Lakes Radio Consortium’s Chris Lehman reports:


Researchers analyzed U.S. Department of Agriculture nutrition data from the past 50 years. They found that levels of several vitamins and minerals decreased by as much as 38% in garden crops over the time period. Don Davis is the lead author of the study. He’s with the University of Texas Biochemical Institute. He says the decline could be the result of decades of breeding plants to produce more and bigger vegetables.


“There’s emerging evidence that when you genetically select for higher yields, you get a plant that grows bigger and faster but it isn’t necessarily able to produce nutrients or uptake minerals from the soil at the same faster rate.”


Davis says despite the fact that vegetables have fewer nutrients in them, he says they’re still the most efficient way to get vitamins and minerals into your system.


For the Great Lakes Radio Consortium, I’m Chris Lehman.

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Winter Birding: An Audio Postcard

  • The Bald Eagle (Haliaeetus leucocephalus). (Photo by Mike McDowell)

Despite the cold weather… there are some dedicated wildlife
watchers taking notes, taking photos and enjoying the outdoors. The
Great Lakes Radio Consortium’s Ed Janus recently joined
four people in the snowy woods and fields to watch them as they watched
birds. He brings us this audio postcard:

Transcript

Despite the cold weather… there are some dedicated wildlife watchers taking notes,
taking photos and enjoying the outdoors. The Great Lakes Radio Consortium’s Ed Janus
recently joined four people in the snowy woods and fields to watch them as they watched
birds. He brings us this audio postcard:


Noel Cutright: “There’s something happening 365 days a year. Whether it’s in June, in
the height of breeding season here in Wisconsin or in the depths of the winter, you
can
find birds just about anywhere.”


(bird song)


“I think people when they think about going birding in the tropics, they’re always
looking
for the new birds that we don’t have here in Wisconsin. And I was kind of surprised
at
how moved I was when I started seeing some of our birds down there.”


(sound of Bald Eagle)


Mike McDowell: “One way to get people who aren’t really interested in looking at birds
is watching something as lovely as a Bald Eagle. A good place to see them would be
Sauk City, along the Wisconsin River. One time I had a bald eagle there fly right
up into
a tree right next to me. Just a gorgeous view of it in the sun. You can watch them
fly
down from the trees and fly over the water and scoop down and grab a fish and bring it
up to a tree and eat it.”


NC: “Well, we’re starting up a bike trail here in downtown Port Washington. Very
protected. Very close to the lakeshore. I hear a chickadee calling here as we get
started.”


(sound of chickadees)


Delia Unsom: “We used to go out for walks a lot, and one day we were out and saw this
red-tailed hawk circling. And so, you know we were watching that but it was so far
away, so I went out and bought this little, tiny pair of binoculars…”


Chuck Heikkinen: “For twenty bucks.”


DU: “For twenty bucks. And then you start seeing birds up close and then before I
knew
it, Chuck had his own pair of twenty dollar pair of binoculars.”


CH: “Once you get really close to a bird with binoculars, you start to see things
you’d
never imagine.”


DU: “Like birds that we would just totally ignore before – for example sparrows.
Sparrows look so plain, but once you really get into birding, there are certain
sparrows
that are just beautiful.”


(sound of goldfinch)


NC: “Goldfinch flying over. They say ‘potato chip’ when they fly. ‘Potato chip,
potato
chip.'”


“Sometimes if you’re quiet and go out and sit in the woods or along the shore and
birds –
and you’re quiet and don’t make a lot of movement, you can get close to birds. Just
sit
down some place and let the birds come to you. It’s a good way to see them up close…”


(sound of Cooper’s Hawk under)


NC: “There goes a Cooper’s Hawk.”


DU: “Seeing birds is one thing, but hearing birds is another thing.”


CH: “After learning the songs of the birds, it’s almost like being in a symphony.
It’s just
incredibly beautiful sound. Almost like hearing the heart beat of the planet.”


(sound of cardinal under)


NC: “Single note call of a Cardinal. Northern Cardinal – just flew across the path
there.”


CH: “What it does, what it’s done for us I think has pulled the whole state into our
life.
Just all corners of the state we’re pretty well acquainted with because of birds.”


NC: “There’s a White-breasted Nut Hatch I just heard. Yank, yank, yank. Yank, yank,
yank.”


(sound of Nut Hatch under)


DU: “It’s easy to get obsessed with birds, you know? It really is easy. But think
about it:
it’s a great thing to be obsessed about. You know, if you’re going to have an
obsession,
why not something beautiful that gets you outdoors, it brings you out into nature, you
know that makes you happier. There’re just some gorgeous, fantastic days. You know,
in the past we wouldn’t have been outdoors. Now we’re always outdoors.”


MM: “Really all they need is a pair of binoculars and a little bit of time and it’s
great
exercise and why not?”


(bird song fades out)


HOST TAG: “Noel Cutright, Mike McDowell, and the husband and wife team
of Chuck Heikkinen and Delia Unsom watch birds in their home state of Wisconsin. Ed
Janus produced that audio postcard for the Great Lakes Radio Consortium.”

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Dire Warnings From Worldwide Frog Study

  • Due to many different catalysts, including climate and habitat change, amphibians are said to be rapidly disappearing. (Photo by Linda Lundberg)

The most comprehensive study of amphibians ever done
shows nearly a third of species are threatened with extinction. The
Great Lakes Radio Consortium’s Erin Toner reports:

Transcript

The most comprehensive study of amphibians ever done shows nearly a third of species
are theatened with extinction. The Great Lakes Radio Consortium’s Erin Toner reports:


More than five hundred scientists from more than sixty nations were involved in the
recent Global Amphibian Assessment. The three-year study looked at the status of more
than 5700 known species of frogs, toads, caecilians, and salamaders. It found out that
more than thirty percent of them are near extinction. In the Americas and Australia,
outbreaks of a highly infectious fungal disease have hurt amphibian populations.


But worldwide, the report says the biggest factors for the decline are habitat destruction
and pollution. It also says since amphibians depend on freshwater to survive, the loss
of species shows the Earth’s freshwater supply is in danger. But scientists say the
negative trend could reverse with a swift commitment of resources, such as creating new
protective areas and captive breeding grounds, and better protection of fresh water.


For the Great Lakes Radio Consortium, I’m Erin Toner.

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