The Great Blue Heron

  • An island in the Upper Mississippi, not far from downtown Minneapolis, is home to many Great Blue Herons.(Photo courtesy of Stephanie Hemphill)

Some people say robins are the first sign of spring. But there’s another bird that makes a dramatic entry in northern states. The Great Blue Heron soars in to make a nest… and guard it:

Transcript

Some people say robins are the first sign of spring. But there’s another bird that makes a dramatic entry in northern states. The Great Blue Heron soars in to make a nest… and guard it:

On an island in the Upper Mississippi River, a stand of cottonwood trees is silhouetted against a gray sky. The bare branches are festooned with big nests, made of twigs and branches. Next to the nests, like sentinels at the castle gate, stand Great Blue Herons. These birds are four feet tall. More than a hundred of them are claiming their domain in these trees, just upriver from downtown Minneapolis. When one takes off and glides away, its six-foot wing span dwarfs the ducks and songbirds sharing the island.

It’s hard to tell the males from the females because they’re the same blue and gray. Birder Sharon Stiteler is leading me on a tour of this rookery.

“The males arrive first, and they work out who’s going to take which nest. Where you see one bird standing up, that is most likely a male. He’s hanging out there because the other males who are still waiting to attract a female could come by and steal sticks out of his nest to make his nest look better.”

On some nests, you can see females already sitting on pale blue eggs the size of small mangoes. But Stiteler says herons are not always good parents.

“If the chick falls out of the nest and lands on the ground, that chick is toast: the parents will not continue feeding it. And oftentimes you’ll see turkey vultures hanging out at rookeries, and they’re waiting for the young to fall and starve, and then they’ll have a whole bunch of food.”

But at least on this island, there won’t be many predators like coyotes or foxes.

These birds were once threatened by humans. Their cousins the egrets were hunted for their beautiful white feathers, and both suffered disastrous population loss until the pesticide DDT was banned.

Now you can see them in streams and lakes all over. They breed in Canada and the upper midwest. They spend their winters wherever they can find food. Herons literally stalk their prey.

“They have a lot of patience, and they just stare at one spot for long time, and then they jab down and grab the fish. Their beak is shaped like a pair of super-sharp chopsticks. Sometimes they catch a huge fish and they have to juggle it around, especially if they have it perpendicular with their beak, they have to jostle it around, and the fish is wiggling, and eventually they get it just right so it’s straight in line with the bill, and you can watch this huge thing slide down that long slender neck.”

Sharon Stiteler is a part-time naturalist with the National Park Service, and she writes a blog called bird-chick-dot-com.

Today the herons are pretty quiet. But Stiteler has a Blackberry loaded with their sounds, including the prehistoric squawk they make when they’re startled.

And Stiteler says it can sound really strange when the young are clattering for food.

After the young are raised — at least the ones that survive — the herons will stay here on the river, until it freezes over and they can’t fish anymore. Stiteler says the birds decamp all at once.

“One day we have Great Blue Herons, and the next day they’re gone, and they migrate at night.”

They tuck back their long necks when they fly, forming an S-shape and hiding their true length.

Stiteler says the recovery of Great Blue Herons, along with pelicans, eagles, and other birds near the top of the food chain is a sign of a healthier ecosystem.

For The Environment Report, I’m Stephanie Hemphill.

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Parrots in Brooklyn

  • The parrots build nests around transformers for warmth. But the nests can catch fire and cause people to lose their electricity. (Photo by Steve Baldwin)

Think ‘city bird,’ and you probably
think ‘pigeon.’ But in some cities,
another kind of bird is thriving –
the bright green monk parrot. Some
people love them; some people hate
them. Samara Freemark
went to Brooklyn to find them:

Transcript

Think ‘city bird,’ and you probably
think ‘pigeon.’ But in some cities,
another kind of bird is thriving –
the bright green monk parrot. Some
people love them; some people hate
them. Samara Freemark
went to Brooklyn to find them:

No one really knows just how the parrots got to Brooklyn. But the best guess is they were shipped here from Argentina in the 1960s. They were supposed to go to pet stores. But somewhere along the way someone opened a shipping crate and the parrots escaped. Now there are thousands of the birds in colonies across Brooklyn.

“They’ve reinvented themselves as a north American species.”

That’s Steve Baldwin. He’s a tall, white haired native New Yorker and, I think it’s fair to say, a parrot fanatic.

“It has probably something to do with the peculiar person I am. I think I probably regarded myself as an outsider for most of my life. And so the idea you could have these creatures who really don’t belong here, somehow make the transition and now they belong here. I just found that a personally inspiring story.”

Steve started a website about the parrots. He leads monthly parrot tours. He even wrote a song about the parrots.

“I got some news for you baby and it might not be so good. There’s an avian invader in the neighborhood. Well, they’re little green parrots from the Argentine…”

I met up with Steve as he was starting one of his tours of the parrot colony at Brooklyn College.

“I’ve been following these little green guys for about 5 years. One of the things that endears it is that it’s very smart. In fact the monk parakeet is the second best talking parrot. Next to the African gray, the monk parrot is number two. Are there any particularly Brooklyn sounds that they… well, occasionally you’ll find one that’s imitating a car alarm.”

We head over to the college’s soccer field.

“Sometimes when we come out here we’re lucky and the parrots are down on the ground, eating the grass. But I don’t see them today. So we’re just going to keep moving. Uh! Here they come! There they go! We got a good group.”

There are probably 50 parrots living in the Brooklyn College colony. But it’s one of many colonies across New York. There are about 450 parrot nests in the city. That’s according to numbers from Con Edison, New York City’s energy provider.

Con Edison tracks the nests because for the company, the parrots are actually a pretty big headache. A couple of days after the tour I met up with Chris Olert. He’s Con Edison’s point man for dealing with all problems parrot-related.

“What happens is, these birds build nests around our transformers, because of the warmth. And these are not little hold in your hand nests. Some are three or 4 or 5 feet tall, and 3 or 4 or 5 ft wide. They’re huge. And they do catch on fire. And those fires have resulted in customers losing their electricity.”

Con Edison has been trying to figure out what to do about the parrots for years now. They tried knocking the nests down – but the parrots came back and rebuilt. Last year they even installed some mechanical owls with rotating heads to frighten the parrots away.

“The owl was – some of our people who work in the overhead in Queens spotted these owls in a hardware store and put them up on the equipment, but the parrots pretty much laughed in their faces.”

Nothing has really worked. Olert says Con Edison’s numbers show the New York parrot population growing by 10% every year.

At that rate, in a couple of decades they could be as ubiquitous – and as hated – as that other New York bird – the pigeon.

For The Environment Report, I’m Samara Freemark.

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Osprey Nest Near Fish Hatchery

  • The osprey is a bird that scoops fish out of rivers and lakes (Photo courtesy of the National Parks Service)

Ospreys are birds of prey that eat fish. Todd Melby tells us about a pair of osprey that tried to nest near a fish hatchery:

Transcript

Ospreys are birds of prey that eat fish. Todd Melby tells us
about a pair of osprey that tried to nest near a fish hatchery:

The osprey is a raptor that scoops fish out of rivers and lakes.

So when a pair of osprey decided to mate near a DNR fish hatchery south of
Minneapolis, biologists were delighted and worried.

Ospreys rarely nest so far south. So that was good news. What worried biologists was
whether the birds would eat the fish. Biologists decided these fish were too small.

Another worry was the ospreys’ choice of a nesting site. In this case, the birds picked an
electrical power pole.

Lisa Gelvin-Innvaer is with the Minnesota DNR.

“They like high areas. Places that have room for them to put their nest. Transmission
poles often provide that.”

Biologists decided that was a bad idea, so they’ve built a tall nesting platform near the
power pole.

“We’re hopeful with the new nesting platform, that they’ll come back and attempt to nest
again.”

For The Environment Report, I’m Todd Melby.

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Woody the Woodpecker: Save My Home!

  • Chet Meyers surveys the Cedar Creek Ecosystem Science Reserve for Red-headed Woodpeckers. He's heading up a study to identify the bird's preferred habitat, and to encourage landowners to let dead and dying trees stand, as woodpecker homes. (Photo by Stephanie Hemphill)

Red-headed woodpeckers used to
be just about everywhere east of the Rocky
Mountains. But these days the number of
red-headed woodpeckers is about half of
what it was fifty years ago. Stephanie
Hemphill reports volunteers
are working on a new project to get people
to help red-headed woodpeckers. They’re
encouraging landowners to let dead or dying
trees stand rather than cut them down:

Transcript

Red-headed woodpeckers used to
be just about everywhere east of the Rocky
Mountains. But these days the number of
red-headed woodpeckers is about half of
what it was fifty years ago. Stephanie
Hemphill reports volunteers
are working on a new project to get people
to help red-headed woodpeckers. They’re
encouraging landowners to let dead or dying
trees stand rather than cut them down:

You can’t miss Red-headed Woodpeckers. They have long beaks,
bright red heads and snowy white breasts. And if you go to the right
place, you can find a lot of them.

“Somebody told me that there was Red-headed Woodpeckers up
here, so I walked five minutes, and there was a Red-headed
Woodpecker, and it flew into a hole in a tree, and I says, ‘wow, this is
easy.’”

Lance Nelson first visited the Cedar Creek Ecosystem Science
Reserve about a year ago.

“And then I came up this year and found 8 nests. But the young
make a lot of chattering, so you can usually tell where the nest is.”

Today they’re not hammering on trees – the sound most of us
associate with woodpeckers – but they’re doing plenty of chattering.

This reserve in southern Minnesota looks a lot like how much of the
Midwest used to look.

There are clumps of big oak trees here, separated by open areas of
native grasses, shrubs and wildflowers. The biologists call it an oak
savannah.

And there are Red-headed Woodpeckers everywhere – about fifty of
them on this 500-acre patch of ground.

“There’s a red-headed, and he’s got a baby with him. God, they’re
beautiful. They are so beautiful.”

That’s Chet Meyers. After a career as a college professor, he’s now
in charge of an effort to make more places where Red-headed
Woodpeckers can build their nests and raise their young.

If they can figure out exactly what the woodpeckers like so much
about this place, maybe they can come close to reproducing the
same conditions other places.

Chet Meyers is marking every tree where the woodpeckers have
nested.

“See these two trees to the left, go to the right-most one, it forks, and
there’s a broken-off snag up there, looks like a ‘Y’. That’s where the
babies were sticking their head out a couple weeks ago. It was really
cute.”

Once the trees are marked, the group will catalog exact descriptions
of each tree. They’re hoping to come up with a profile of the perfect
home for Red-headed Woodpeckers.

“And we’re going to measure the diameter of the tree, how high the
nest cavity is, the species of the tree, is it alive or is it dead, so we
can get some data on what seems to be the preferred habitat.”

Once they’re pretty sure they know what the woodpeckers like, they’ll
reach out to land owners. They’ll to try to get them to leave dead and
dying trees standing.

That could work on old abandoned farms, where there are trees and
open spaces. Or in cemeteries. Or around golf courses.

“If our theory – see, this is all theory – if our theory is correct, the golf
course replicates an oak savannah and there should be birds there.
So, that’s what we’re hoping.”

And Meyers says helping woodpeckers means helping other wildlife
too.

“The woodpecker is called a primary nester, it digs the cavity. But
flying squirrels, mice, snakes, bluebirds, tree swallows – there are lots
of other animals that are secondary nesters. They can’t drill the hole.
But they live there. So what we’re trying to do is preserve the habitat
so the woodpeckers drill the hole and when they leave, something
else will come in and live in it.”

The researchers think if you have dead or dying tree, that could be a
home for a Red-headed Woodpecker. But usually homeowners are
worried the tree could fall and damage something, Meyers says you
can cut off the top and some of the bigger branches and leave the
rest of the tree standing. They think the red-headed woodpecker will
be just as happy.

For The Environment Report, I’m Stephanie Hemphill.

Related Links

Nature’s Little Architects

  • The nest of a Swainsons warbler. (Photo by Judith McMillan)

Some of the world’s most intricate
architecture is not always constructed by
humans. Sometimes the most skilled architectural
wonders are designed by nature. Gretchen Cuda reports on an exhibit that celebrates
birds’ nests:

Transcript

Some of the world’s most intricate
architecture is not always constructed by
humans. Sometimes the most skilled architectural
wonders are designed by nature. Gretchen Cuda reports on an exhibit that celebrates
birds’ nests:

Judith McMillan didn’t find her inspiration in tree branches. She found it in the
basement of the museum where she works. She was rummaging through drawers
there when she came across a hundred-year-old collection of bird nests.

“This Museum must have 10 cabinets full of bird’s nests.”

She was fascinated and immediately knew she had a new subject for her art.

McMillan is a photographer who has been volunteering at the Cleveland Museum of
Natural history for 20 years. In her latest exhibit, titled “Nesting”, she captures some
of natures most inspiring, and often overlooked architecture – the nests of birds.

(sound of exhibit crowd)

“I was looking for nests that were different from each other so that you could see that
these birds were little architects. And there were so many different kinds of materials
used – and then the eggs could be so different. Some with little tiny speckles, some
with different colors some with little calligraphic streaks around them, so it was that
variety that I wanted to capture.”

All the photographs are in black and white – because she really wanted people to
concentrate on the architecture without being seduced by the color. She’s fascinated
by the way different birds chose very specific materials to work with – everything
from marsh reeds, grape vine, or little knotty twigs – like this one.

“This is a vermillion flycatcher – it’s almost like it’s made of pick up sticks in the way
their pushed together.”

And to emphasize the diversity of structures birds can create she shows me an
Orioles nest that’s five inches deep and formerly hung like a basket from a tree.

“I actually had to shine a flashlight down in it when I was taking the photograph in
order to get the eggs to show up.”

Most of the nests and eggs were collected around the turn of the 20th century by
amateur naturalists who never thought twice about disturbing the natural wildlife.

But the practice eventually fell out of fashion as people became more
environmentally conscious and large nest and egg collections were often turned over
to museums – explains Andy Jones the museum’s ornithologist.

“People whose grandfathers were dealing with eggs as a hobby, well their
grandfathers are passing away and so they contact their local university or natural
history museum, and say, ‘hey do you want these?’”

Those specimens were originally collected just because they were pretty. These
days, they’re still beautiful, but they also serve a scientific purpose. Scientists can
look at things such as the thickness of the shells, or the type and number of birds
found in a specific location and tell a lot about the birds. They can see where birds
used to live and how far their territories reached. They can even tell if a bird that’s
extinct now once lived in an area.

Judith McMillan hopes her photographs will not only show how beautiful the birds’
handiwork was, but will also inspire people to do something about saving the birds
that are still here.

“I didn’t understand until I started using a camera myself how you can isolate
something and make people look at it differently–And I hope through my
photographs I’m getting people to take a fresh look at things. It’s hard to have an
appreciation of nature unless you really look at it and start to really care about it.”

Recent surveys have found that many songbirds are disappearing. If people don’t
start caring, those photographs and drawers full of nests might become the only
reminders of many more species that go extinct.

(song of a Cardinal)

For The Environment Report, I’m Gretchen Cuda.

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A New Way for Whoopers

The whooping crane experiment in the Eastern U.S. is trying something new this fall. Wildlife officials hope some young birds will migrate south with older cranes… instead of behind ultralight aircraft. The Great Lakes Radio Consortium’s Chuck Quirmbach reports:

Transcript

The whooping crane experiment in the Eastern U.S. is trying something new this fall.
Wildlife officials hope some young birds will migrate south with older cranes instead of
behind ultra light aircraft. The Great Lakes Radio Consortium’s Chuck Quirmbach
reports:


For five years, researchers trying to create a migrating flock of whooping cranes have had
younger birds follow ultra lights for the cranes first trip to Florida, but this year wildlife
officials also trained four young whoopers to associate with older cranes at their summer
nesting area in Wisconsin. The hope is the young birds will migrate with the older ones
and not need a human guide.


Larry Wargowsky manages the Necedah National Wildlife Refuge. He says the effort
called, “Direct Autumn Release,” aims to better mimic nature and save money.


“The ultra light training is very time consuming, very expensive because you have a
group of people that are involved with it from day one all the way through to migration in
the fall, whereas the direct autumn release takes fewer people. You don’t need planes.”


Wargowsky predicts the ultra light aircraft will eventually be phased out of the whooping
crane reintroduction program.


For the GLRC, I’m Chuck Quirmbach.

Related Links

Nesting Season for Piping Plovers

  • A pair of piping plover chicks. (Photo courtesy of Michigan DNR)

In the last century, the increase in shoreline development has
driven a small and rare bird close to extinction. Each spring, the Piping
Plover nests along the shores of the Great Lakes. The Great
Lakes Radio Consortium’s Tom Kramer gives us an update on the effort
to protect the bird:

Transcript

In the last century, the increase in shoreline development has driven a
small and rare bird close to extinction. Each spring, the Piping Plover
nests along the shores of the Great Lakes. The Great Lakes Radio
Consortium’s Tom Kramer gives us an update on the effort to protect the
bird:


The Great Lakes population of Piping Plovers has been on the endangered
species list since 1986, when the number of nesting pairs dwindled to 17.
These days the number of nesting pairs is up into the 50’s. But biologists
say the bird still needs protection.


Lisa Gamero coordinates the Piping Plover Patrol for the Michigan Department
of Natural Resources. Gamero says nesting sites are becoming scarce as the birds compete with
people for lake frontage.


“Their habitat needs are basically, kind of a wide open beach, with a lot of small pebbles or cobbles, sand, and they usually have to be within a hundred feet of the water, and the nearest vegetation needs to be about a hundred feet away from where they decide to put their nest.”


The plover will remain on the federal endangered species list until its
numbers increase to 150 healthy nesting pairs, for 5 consecutive years.


For the GLRC, I’m Tom Kramer.

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High Hopes for Whooping Crane Eggs

  • A baby whooping crane walks toward the camera. (Photo courtesy of the USGS)

Wildlife experts hope an experimental flock of whooping
cranes will lay more eggs this spring. The first egg produced during the experiment was recently found damaged. The Great Lakes Radio Consortium’s Chuck Quirmbach reports:

Transcript

Wildlife experts hope an experimental flock of whooping cranes
will lay more eggs this spring. The first egg produced during the
experiment was recently found damaged. The Great Lakes
Radio Consortium’s Chuck Quirmbach reports:


Scientists working on the project to develop 25 nesting pairs of
migrating whooping cranes in the eastern U.S. hope this is the year the
young cranes start to produce offspring.


But Michael Putnam of the
International Crane Foundation says one obstacle to the hatching of
crane eggs may be inexperienced parents.


“Once they do produce a fertile egg, then the birds have to exhibit the
right behaviors to tend the nest, incubate… and we’ve found some of
our birds- The females might be very good incubators at the
beginning, but it may take the male a year or two to catch on that’s
supposed to take a turn sittin’ on the egg.”


Putnam says other difficulties may include predators eating the eggs.
if the birds are successful, it’ll be the first whooping crane egg to
hatch in this part of North America in more than a century.


For the GLRC, I’m Chuck Quirmbach.

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Essay: Mourning the Destruction of a Flower Garden

It’s the time of year when many gardens reach their peak – and even grow a little bit wild. That has made one essayist’s loss all the more painful. The Great Lakes Radio Consortium’s Karen Kelly remembers a special garden:

Transcript

It’s the time of year when many gardens reach their peak –
and even grow a little bit wild. That has made one essayist’s loss all the more painful.
The Great Lakes Radio Consortium’s Karen Kelly remembers a special garden:


It looked like a crime scene.


Everything in the garden was gone.


The morning glories no longer crowded the sidewalk. Sunflowers were cut down in their
prime. There was a hole instead of the lilac. And one stubby trunk – where someone had
hacked off the sand cherry tree.


We started the garden just over a year ago. I found out I was pregnant and next thing I
know, my husband is incubating black-eyed susans on top of the refrigerator.


He seemed to have that nesting instinct. Suddenly, he was spending every weekend at
the nursery. He came home with tools and soil and plants and even trees.


The scraggly yard in front of our apartment building was being transformed.
For me, it was just what I needed – a patch of nature in the middle of the city.


This summer, the flowers came back. And we shared the garden with our 6 month old.
We were pointing out the buds on the trees, and the bees buzzing around.


We didn’t tend it much as we got ready to move. And it grew pretty wild.
There were flowers, but also grass and weeds.


Two weeks after we moved, all that life was torn up. Eleven different kinds of plants – all
carefully chosen and tended. We visited them every time we walked in or out of the
building.


I can’t imagine the person who could just rip flowers out of the ground. It was a tiny,
imperfect oasis. Now, it’s just dirt.


Ironically, the only thing that survived was a plum tree we planted on the city property –
between the sidewalk and the road. We thought city workers might pull it up – since it
wasn’t official. Instead, they plunked an iron gate around it and now, every week, a city
truck comes to water it.


We always laugh about how it survived its brush with the city officials.


Now, that tree has proved it really is a survivor – but all that perennial color that was
once a backdrop to it is gone. It was not just a bit of our past, but an investment in the
future as well.


For the Great Lakes Radio Consortium, I’m Karen Kelly.

Anglers Competing With Cormorants

  • The cormorant population is booming in the region, and some anglers say they're competing too hard with the birds for fish. (Photo courtesy of Steve Mortensen, Leech Lake Band of Ojibwe)

Anglers around the Great Lakes are eager for a summer of fishing. Everyone wants to catch the big one. But they’re getting some competition. It comes in the form of the double-crested cormorant. The big black birds with long necks are fish eaters. Cormorants were nearly wiped out by the now-banned pesticide, DDT, in the 1970’s. But now cormorants are back in big numbers. Some anglers feel there are too many cormorants now. And they say the birds are eating too many fish. The Great Lakes Radio Consortium’s Stephanie Hemphill reports on one experimental effort to control cormorants:

Transcript

Anglers around the Great Lakes are eager for a summer of fishing. Everyone wants to
catch the big one, but they’re getting some competition. It comes in the form of the
double-crested cormorant. The big black birds with long necks are fish eaters.
Cormorants were nearly wiped out by the now-banned pesticide, DDT, in the 1970’s. But
now cormorants are back in big numbers. Some anglers feel there are too many
cormorants now, and they say the birds are eating too many fish. The Great Lakes Radio
Consortium’s Stephanie Hemphill reports on one experimental effort to control
cormorants:


(sound of waves)


Robin Whaley often fishes here on Knife River. It’s the biggest spawning ground for
rainbow trout on the north shore of Lake Superior. But today she’s watching the
cormorants on Knife Island, a quarter-mile offshore.


The cormorant population is booming. About a hundred cormorants lived on the island
last year.


“I guess they’re just coming up into this area in the last few years and becoming a
problem, for degrading habitat and for eating little fish.”


Cormorants are native to this area, but they haven’t been around much in the last few
decades, because of poisoning from the pesticide DDT.


The Minnesota Department of Natural Resources stocks rainbow trout here. This year
they put 40,000 young fish into the river. Anglers like Robin Whaley hope the little fish
will grow big enough for them to catch someday.


The little fish face a lot of predators and hazards and the cormorants are one more threat.
Some people would like to reduce that threat. It’s illegal to kill cormorants. They’re
protected by law because they’re a migratory bird.


But a new federal rule says if they’re threatening a resource, people can fight back in a
different way.


Bill Paul runs the Agriculture Department’s Wildlife Services Program in Minnesota. He
sent workers onto Knife Island to try to keep the cormorants from nesting. Their methods
are experimental – but they’re pretty basic.


“We put up some flapping tarps in wind, a couple of yellow raincoat scarecrows, we also
put up ten flashing highway barricade lights, we also have a light siren device out there
that goes during the night.”


The workers also used special firecrackers shot by guns at passing birds to scare them
away.


They did this for two weeks during the cormorants’ nesting season. Bill Paul says even
with all that noise and commotion it wasn’t easy to scare them away.


“They seem to be fairly smart birds and real persistent at coming back to Knife Island.
So we’re uncertain yet whether our activities are actually going to keep them off there
long-term.”


As part of their study, researchers had permission to kill 25 cormorants to find out what
they’d been eating. They wanted to see how much of a threat the birds were to game fish
like the rainbow trout.


They found fish in the cormorants’ stomachs all right. But not the kind most people like
to catch and eat.


Don Schreiner supervises the Lake Superior fishery for the Minnesota DNR. He says
he’d need more than just a few samples to really know what the birds are eating.


“My guess is that cormorants are opportunists and if there’s a small silver fish out there
and he’s just hanging out and the cormorant has that available to eat, he’ll eat it. The
question becomes, is this a significant part of the population that they’re consuming, or
isn’t it?”


Despite the concerns of some anglers, researchers have been studying cormorants for
years, and so far they haven’t been able to prove the birds are harming wild fish
populations.


John Pastor is an ecologist at the University of Minnesota Duluth. He says the study at
Knife River won’t prove anything useful either.


He says it ignores the bigger picture. Pastor says you can’t just look at one predator and
come to any firm conclusions. There could be lots of reasons why there aren’t many
steelhead, or rainbow trout.


“Changes in land use. All the adult steelhead out there eating the young of the year
steelhead. Maybe it’s some pollutant in the lake. You never know. But it’s easy to fix on
the predator as the problem, because people see a cormorant dive down and come up with
a fish, and they say to themselves, I could have caught that fish.”


Pastor says even if the cormorants are eating lots of young rainbow trout, it doesn’t
necessarily mean the birds are hurting the overall trout population.


And even for an angler like Robin Whaley, the concern about the trout is mixed with a
feeling of respect for the cormorant.


“I admire the bird very much, but human beings, we’re in the business of controlling
habitats and populations, and this is just another case of that.”


For many anglers, the ultimate question in this competition between predators is simple.
It’s about who gets the trout – cormorants or humans.


For the Great Lakes Radio Consortium, I’m Stephanie Hemphill.

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