Alaska Fish & Wildlife News
Urban Living from the Bruins' Perspective
The first thing wildlife research biologist Sean Farley would like you to know is this: The Anchorage Bear Camera Collar Project is a work in progress. Few conclusions relating to the project can yet be drawn.
Yet even in its early phases the work he shares with a collaborative staff of wildlife research, management biologists and education staff is intriguing. Last summer, Farley and a team of biologists captured a half-dozen bears – four black and two brown bears – in and around the urban areas of Anchorage and fitted the animals with collars fixed with video cameras and global positioning systems. Once collared, the bears were released to resume their ramblings while the cameras rolled and GPS units tracked.
That a municipality of 300,000 people would be home to scores of black bears and dozens of brown bears is unusual by most urban standards. Indeed, the bear camera collar project in many ways chronicles a tale of two cities – one of people, another of bears – one thriving quietly, often all but unnoticed, within the bustle and racket of the other. The camera and GPS technology Farley has begun to employ could ultimately unlock mysteries for other wildlife researchers, enhance biologists’ management of bears within and beyond city limits, and enable educators to better teach citizens to co-exist safely with bears.
“The whole idea of camera collars on animals has been around for a long time,” Farley explains, “but the technology didn’t exist, really, until the last couple of years to do it appropriately.”
With no way to consistently follow and record the movements and behaviors of Anchorage’s bears, unanswered questions outnumber documented facts. “How often do (city) bears rest?” Farley wonders aloud. “How long do they rest? What do they eat – is it natural or is it anthropogenic food items? Why do they stay in town? And when they leave town, why do they leave?”
Happily, the age of digital technology caught up with Farley’s needs last year. A bear collar series by Lotek®, a manufacturer specializing in wildlife monitoring systems, seemed suited for the job. Each collar was equipped with an onboard GPS and camera for recording video and sound. Farley managed to buy a handful of the units for summer 2012, when the Anchorage project’s first camera collars were deployed.
The collars are battery driven and were set on the black bears to capture 10 seconds of video every five minutes, 24 hours a day. On brown bears, the collars were programed to record 10 seconds of video every 20 minutes, 24 hours a day, an adjustment meant to enable Farley and his team to capture data from the brown bears for a longer time period. The collar and video systems have limited battery and storage capacities, Farley explains, hence the need to adjust times to suit the duration of his research sequences.
A GPS point marks the animal’s location every 20 minutes for both species and, finally, the collars are equipped with a drop-off device designed by Telonics®, an electronics company dedicated to the development of wildlife research technologies. The device allows the collars to detach from the bears at a pre-designated time (about six weeks for the black bears in this project) so the cameras and GPS units can be retrieved and the data they’ve gathered analyzed.
Bears used in the study were captured in barrel traps or free-darted with immobilizing drugs as they ranged around town. The project’s first goal was to determine whether or not the collars would work. If they proved tough and reliable enough initially, Farley and his team would be poised to record and analyze the city bears’ daily habits, diets and more.
EDUCATION: Seeing is Believing
The first thing you see when the online video’s “play” button is tapped is a moving kaleidoscope of greenery, scarlet berries and flashes of white sky. Present in the center of it all, and vaguely humorous in the way that it brings to mind a certain television dog-food commercial (think “Bacon!”), is the tawny muzzle and slurping pink tongue of a feeding black bear. Because collar cameras are positioned on the lower portions of the bears’ necks, the muzzle and mouth is a feature common to all of the Anchorage Bear Camera Collar Project’s digital video footage.
This particular video, titled “Natural Foods,” is a compilation of clips gathered by wildlife biologist Tony Carnahan, Farley’s assistant, from last summer’s collar cameras. Education associate Elizabeth Manning has in turn edited the clips, stitching them together to feature Anchorage black bears feeding in local greenbelts and wooded backyards. Short subtitles explain that bears are omnivores – they eat meat and plants – and that a variety of preferred bear foods found in nature are also available around the city.
“I often tell people that you don’t want to have garbage out around your homes,” Manning says. “Bears will come back to your neighborhood if they know that there’s trash and, in fact, we have seen that on the video – they’ve been revisiting neighborhoods where they got garbage.”
As part of the project’s education and outreach contingent, Manning is working closely with Anchorage School District educators sharing early bear collar camera insights –– with teachers and students through workshops and presentations.
“We went in to Central Middle School in December,” says Manning, “and worked with biology teacher Chris Kleckner and his students doing some Google Earth activities. We gave them some of the data – one day from one of the bears – and they were able to look at the points on the map and look at where the bear went and kind of zoom in on some of those areas.”
The students learned how biologists combine the GPS points, gathered 20 minutes apart, with corresponding video sequences to get a more accurate, visual idea of a bear’s meanderings between intervals. “You know, a bear doesn’t walk from Point A to Point B in a straight line,” says Manning of the connect-the-dots patterns mapped by the GPS points.
Farley offers an example the biologists presented to the students: “We were able to pick a section,” marked by GPS coordinates, “where the bear was, at one point, behind 6 Robblees and the next point he was behind Costco. But if you draw a straight line through there, it was really incongruous to expect the bear had walked that.”
It’s hard to believe that a wild black bear would stroll, largely undetected, anywhere near this area of expansive concrete parking lots and warehouses bisected by Dimond Boulevard, a major six-lane thoroughfare. But the GPS and accompanying video do not lie.
“So, if you then went to the video that occurred during that whole time period,” Farley continues, “you could sort of piece together the track that he probably took and what you see is that he’s walking through an industrial area and then he’s next to a stream. Well, the only stream is Campbell Creek, and through that we’re able to demonstrate for the students the importance of greenbelts.”
Manning agrees. “Google Earth is detailed enough in Anchorage where you can actually figure out where that bear is between those two points,” she says. “So the students had fun looking at that and learning about Google Earth and learning about bear biology and asking some basic bear biology questions about why the bears were doing what they were doing.”
MANAGEMENT: Riding Herd on Anchorage’s Wild Side
Each spring, as sure as Southcentral Alaska’s days grow long and the Canada geese return to nest on Potter Marsh, Jessy Coltrane’s phones start ringing nonstop. Beginning around late April and May when local black bears and brown bears leave winter dens, the Anchorage area wildlife biologist and her assistant, biologist Dave Battle, spend much of their time responding to reports of conflicts between citizens and urban bears. Almost always they arrive with smiles and tips on how complainants can discourage bear encounters by cleaning up yards, putting away birdseed, trash and other attractants. Sometimes they bring along a shotgun to dispatch animals deemed dangerous or that have become chronic nuisances.
From Coltrane’s perspective, the Anchorage Bear Collar Camera Project’s education and outreach efforts have the potential to make the city safer for people and bears. She also believes those efforts might eventually allow her more time to deal with other aspects of her job as a wildlife management biologist.
“The educational aspect that Elizabeth (Manning) is working on is going to directly benefit some of our bear-human conflict issues that take a bunch of our management time,” says Coltrane. She believes that the videos will help residents of Anchorage – and beyond – understand why conflicts with bears occur and teach prevention.
At the same time, Coltrane says, the research conducted by Farley and Carnahan promises to benefit management in other ways.
“Anything we can learn about the populations of animals we’re managing, the better off we are,” she says. “Being able to manage – especially in the Anchorage Bowl area – some of the conflict issues, understanding habitat selection and what’s driving the movements of these animals, is a great benefit.”
For example, Coltrane asks, how many bears might it take to generate a cluster of a dozen calls, or two dozen, from concerned citizens from one side of the city to the other? Might a single bear be responsible for widespread conflicts? If so, why?
Meanwhile, Farley adds that it’s critical to keep the project and its early findings in perspective. “The real benefit to the department and our ability to manage the bears,” says Farley, “will come from what data are collected.”
Four video clips on the urban bear project are available for viewing, addressing birdseed and bird feeders; bears and garbage; bears and wild food; and bears and electric fences.
More on collars, and what to do if you find a radio collar or tag
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