Elephants navigate India’s changing landscape
WWF
April 02, 2025
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The state of Assam in northeast India is home to the second-largest Asian
elephant population in India. The landscapes in Assam have rapidly
transformed over the last two decades into a diverse mosaic of forests,
crop fields, human settlements, and tea plantations that grow the famed
Assam tea. Elephants and many other wildlife species are now finding their
historical corridors and forest habitats fragmented and destroyed. This is
pushing people and wildlife into closer proximity to each other, resulting
in increased negative, and often dangerous interactions.
In 2021, in partnership with the Assam Forest Department, we shared our
plan to fit elephants with GPS collars in key areas within the state to
monitor their movement and understand important habitats, as well as the
levels of conflict occurring with people, all in an effort to support
informed conservation decision-making that benefits both elephants and
people.
Meet the elephants
Since then, the first elephant, Tara, was collared in 2021, followed by
three other female elephants over the next two years—Phul, Mynow, and
Budhuni. The data collected from these collars has revealed how remarkably
adaptable these elephants are, even as their habitats face increasing
fragmentation and human encroachment. Most recently, in November 2024, a
fifth elephant and first male, named Bishu, was collared.
By tracking the movements of these five collared elephants and their herds,
we’re gaining valuable insights into how elephants navigate this fragmented
landscape and how human communities respond to their presence. This
knowledge will help us develop efforts to protect key habitats and movement
corridors, as well as strategies to manage conflict and foster coexistence
between people and elephants.
Unraveling movements
Tara and Phul
The first two collared elephants, Tara and Phul, and their herds spend much
of the harvest season—from September to December—each year in Sonitpur
district in northern Assam. In this area, human-elephant conflict occurs
frequently during harvest season, when elephants that don’t reside
year-round in these human-dominated areas arrive from parts unknown just in
time to feed on the ripening rice gains. Until the collaring exercise, the
biggest questions centered on why they arrive in this area during this
period, where they go during other times of the year, and what the
implications are of this movement on resulting human-elephant conflict.
The collar data revealed Phul and Tara’s herds spend a large part of the
year (during non-harvest season time) within the relative safety of two
protected areas, Nameri National Park and Sonai Rupai Wildlife Sanctuary in
northern Assam. And despite the risks of navigating human-dominated
landscapes during harvest season, Phul and Tara’s families make an annual
southern migration to the grasslands of the Brahmaputra River islands
through historically used movement routes during this time.
To avoid humans, Phul and Tara’s herds have become entirely nocturnal
covering long distances as they navigate human-dominated areas and feed on
crops under cover of darkness. They then spend the daylight hours either in
the tea gardens or in patches of reserve forest away from people and are
active within that forest patch during those hours.
The data revealed something that was never quite previously understood,
which is where the elephants went when not visible in plantations and crop
fields. But it also left conservationists puzzled as to why they would
undertake such a risky seasonal journey if they didn’t have to. Perhaps the
southern migration is a historically engrained behavior that the elephants
have undertaken for generations. Maybe the grasses of the Brahmaputra
River’s floodplains provide specific nutrients not found in other areas, or
maybe the islands provide good cover for the elephants to hide during the
day until they move to the surrounding crop fields at night. Their movement
paths and collar data revealed the importance of securing the Nameri-Sonai
Rupai-Arimora Chapori Corridor, through which they consistently travel, to
ensure their free movement to the grasslands of the Brahmaputra River.
Mynow and Budhuni
West of Sonitpur in the Udalguri district bordering Bhutan, Mynow and
Budhuni and their herds move through a similar landscape made up of forest,
tea and agriculture plantations. However, a major difference between the
two districts is the communities’ tolerance of elephants, which is likely a
result of different local cultures and related behaviors. Sonitpur district
has seen high levels of retaliatory killings through poisoning and
high-voltage electric fences. While incidences of such deaths have reduced
over time, the elephants are finding new ways to navigate resistance to
maintain their historic connection with the Brahmaputra River. These
communities tend to chase elephants away from tea gardens and other areas.
On the other hand, the locals in the Udalguri district, while engaging in
various methods to protect their crops, display higher tolerance for their
pachyderm neighbors and rarely chase, mob, or engage in hostile behavior
towards the elephants.
The communities’ higher tolerance levels of elephants can likely explain
why Mynow and Budhuni will stop and forage within tea plantations, even
during the day, as they don’t come across many people. Then the elephants
will move between the fragmented forest patches and crop fields at night
when human activity is low.
Mynow and Budhuni’s movements also showed that their herds will move across
the border into neighboring Bhutan depending on the seasons. During the dry
season, they will head to the lush forests of Bhutan in search of water,
while remaining in India during the wet season where they can access crops
and other food sources. The movement data can help the two countries better
protect the elephants and their movement corridors, further underscoring
the importance of transboundary conservation and collaboration.
Bishu
Initial movement data from Bishu, the male collared most recently in
Biswanath District to the east of Sonitpur, showed him traveling south
across an array of land use types and along a riverine corridor to the
Brahmaputra River islands that are part of Kaziranga National Park. He then
returned north to the reserve forest near where he was collared. In the
short time since he was collared, he has already provided important data on
his movements, with a bigger story to emerge over time about his use of the
landscape.
As we continue to monitor the five collared elephants and their herds,
we’ll better understand how the elephants are adapting to the changing
landscape and human attitudes and responses to them.
From this research, we are understanding more that elephants are modifying
their behavior to survive in complex, human-dominated landscapes. Given
their increasing overlaps with people, the invaluable data we are receiving
from the collared individuals will enable better-informed conservation
interventions that result in positive outcomes for both people and
elephants.