[cerebral music]
- [Narrator] In big cities across America,
a surprising new resident has moved in.
- Let's see here, there's a good chance
that hopefully he'll take off
and go south to where he normally is at.
- [Narrator] A wild hunter lurking in shadow.
- He was right here.
I think we just pushed him around.
The core of his territory is further south.
We're getting close to the edge up here.
[leaves rustling]
Oh.
Oh, there he is.
- [Narrator] What are wild coyotes doing
in a city as dense as Chicago?
And how is their presence here changing our ideas
about how the human world and natural world can co-exist?
[tribal music] As humanity's footprint
relentlessly expands across the globe,
the space available to our animal neighbors shrinks.
More than half of the world's habitable land
is taken up by agriculture and urbanization.
This pressure is forcing many wild creatures to adapt
or die.
Few species have adjusted as well
to this new world as coyotes.
The Chicago metropolitan area is the third largest
in the US, home to nine and a half million people.
In spite of its human density,
the Chicago coyote population has grown steadily
over the past few decades, and now numbers close to 4,000.
[tribal music continues]
You'll even find them stalking among downtown skyscrapers.
- The concerns rose to the level
where we were asked to develop a project
to actually investigate.
That project started in the 1990s
when coyotes began appearing in parts of the Chicago area
that they'd never been seen before.
[cerebral music]
There wasn't much known about coyotes living in urban areas
because it hadn't really been documented much.
- [Narrator] To figure out why so many
of these creatures are here,
researchers from Chicago's Urban Coyote Research Project
are using tracking collars.
They've collared more than 600 animals over 20 years.
The collars allow scientists to track the animals movements
across the city and study the coyotes' behavior.
[cerebral music continues]
- [Gehrt] When we started,
we had a lot of preconceived notions
and in most cases, we were dead wrong.
We assumed that any coyotes that are appearing
in these areas of Chicago
were only there temporarily, just moving through.
- [Narrator] But one of their first discoveries
was that coyotes were taking up permanent residence
inside the city.
- [Gehrt] They're extremely territorial.
They spend a lot of their time patrolling their boundary
to maintain these highly-structured territories
Overlaid on that patchwork of territories,
you have solitary coyotes
that have left their family groups,
just simply floating around, looking for vacant territory.
- [Narrator] The coyote population in Chicago
has grown so large that these drifters
have sought refuge in the only habitat
available to them,
downtown.
And it's not just Chicago.
This resourceful canine has spread into other major cities,
including Los Angeles, San Francisco, and even New York.
- [Gehrt] The narrative that the general public
typically sees is that coyotes conflict with us
because that's the only way they make the news.
People just don't understand that they have to avoid us
to survive in a city and they have to be really good at it.
- [Narrator] They've become urban ghosts
hiding in our midst.
- [Gehrt] The first thing we noticed
was that they become much more nocturnal
in their activity patterns.
The other thing that we noticed
is that they learn how to cross the roads very well.
- [Narrator] Some have actually been observed
using traffic lights to safely cross streets.
And another reason they're able to avoid us
is that despite living among us,
they don't need our help to live here.
- [Gehrt] We have thought,
well, if they are existing there at all,
it's only through our help, mainly through us feeding them.
We were really shocked,
they could continue to find their natural prey
and function like a predator
even in some of the most developed areas.
[smooth jazz]
[somber music]
- [Narrator] Coyotes are the largest mammalian predator
in North America that's able to survive in cities
and still maintain its wild lifestyle,
but it's not the only species
that makes up Chicago's urban ecosystem.
In fact, in places like this,
conservationists are starting to rethink the relationship
between cities and wildlife.
[somber music continues]
- The prevailing narrative of conservation
casts cities as the villains.
They leave nothing behind,
it's just this gray, concrete wasteland.
There is some truth to that, but at the same time,
the reality is so much more complex.
There are these amazing interactions
happening all around you.
- [Narrator] Magle's team has spent the past 12 years
documenting this with camera traps,
capturing images of coyotes and other urban wildlife
throughout the greater Chicago area.
- [Magle] It's the largest urban wildlife study
that's ever been conducted.
We really are trying to understand the entirety
of this urban wildlife system.
If we understand how animals make decisions
on a select habitat, we can tweak that environment.
We can engineer the wildlife communities that we want.
- [Narrator] Seth and other researchers
dream of designing a more wildlife-friendly Chicago
and hope to inspire other cities to do the same.
- [Wesley] You can create ecosystems within cities
that support populations that previously had lived there.
- [Narrator] One place that's happening
is the industrial Chicago River.
A section of it is now called "The Wild Mile."
- [Wesley] We're emulating the natural conditions
of a regular river within an urbanized ecosystem.
So, we take that existing infrastructure,
steel channelized walls,
and we transform it into something
that is more amenable to the wildlife.
The floating gardens essentially mimic
the naturalized edge conditions of a regular river.
Native plants grow on top of them
and the roots grow directly through these
and hang underneath the water into the river.
And they create fish habitat,
they create bird habitat, insect habitat,
and really jumpstart the ecosystem within the river.
And we really try to experiment and create an environment
that works the best.
[boat engine humming]
Probably the most surprising thing
was seeing a coyote on a dock in the Chicago River.
There's something providing for them there.
And that to me is a good sign.
- [Narrator] Cities like Chicago are teaching us
that humans can co-exist alongside wild species
in ways that we never imagined possible
and that urban environments can be built
for the benefit of people and nature.
- [Gehrt] If we can continue the research
on understanding their ecological role,
we'll probably find that we're actually benefiting
from coyotes to much greater extent
than what we currently understand.
- [Magle] We live on a planet
that's becoming more and more urban every year.
Human populations are increasing
and more and more people are living in cities.
If we want to have wildlife on that planet,
we need to understand how do we make those cities
places where people and wildlife can thrive together.
[inspiring music]
♪