In our lives, they鈥檙e everywhere: goofy close-ups, noses pressed to glass, against a scenic backdrop. Now selfies are proliferating on national wildlife refuges, too.
But people aren't taking these selfies. Animals are. Animals trigger these candid snaps when they approach remote-action, motion-activated trail cameras. The surprisingly high-quality shots that result not only entertain; they also inform refuge science and wildlife management actions.
鈥淏iologists often depend on those photographs to help them understand what is happening on the ground,鈥� says Benjamin Tuggle, the U.S. Fish and Wildlife Service鈥檚 former assistant director for science applications. 鈥淭rail camera images help them make better decisions about wildlife and habitat management because they provide a definitive snapshot record of the species that are out there.鈥�
In south Texas, remote cameras help researchers keep tabs on rare ocelots 鈥� only 80 or fewer remain. 鈥淥ften, we can better understand reproductive status based on photos of visibly pregnant females or females with a kitten or two in tow,鈥� says wildlife biologist Hilary Swarts at Laguna Atascosa National Wildlife Refuge. 鈥淭he photos also help us understand family relationships and provide insight into genetic diversity.鈥�
A shows the ocelot in motion. 鈥淲e don鈥檛 take video on the remote cams,鈥� says Swarts. 鈥淸That takes] too much battery usage.鈥�
At some refuges, trailcam shots help biologists monitor the size of deer populations and decide if culling is needed. At Klamath Marsh National Wildlife Refuge, trailcams help biologists track wolf movements in the Klamath Basin. At DeSoto National Wildlife Refuge in Iowa and Nebraska, 鈥渢railcam shots help managers monitor wildlife response to such habitat management actions as grassland or wetland restoration or burning,鈥� says refuge manager Tom Cox.
At Tualatin River National Wildlife Refuge near Portland, Oregon, staff use trailcam images to show visitors what surprising company they keep. 鈥淲e have caught bobcat, beaver and other elusive animals [on camera],鈥� says Seth Winkelhake, environmental education specialist with the refuge Friends group. 鈥淥ften people have heard coyotes but may not have seen them. Having the up-close trail camera photos has helped connect people with our urban wildlife.鈥�
At Tetlin National Wildlife Refuge in Alaska, biologists use trailcams to study the behavior and diet of , listed as threatened in the lower 48 states. 鈥淲e want to gain a better understanding of lynx ecology [specifically long-distance movements] in Alaska and northwest Canada so we can help ensure lynx populations remain healthy and abundant in these areas in the future,鈥� says Service wildlife biologist Nathan Berg.
What has Berg learned from trailcams? For example: 鈥淲e鈥檝e noticed that lynx vocalizations seem to increase quite a lot during the breeding season. Lynx also make many different vocalizations, and we hope to learn more about what each of these sounds may mean. We鈥檝e noticed that lynx will use the same travel paths and walk in the same footprints in the snow over and over again each time they pass through an area ... This likely helps them conserve energy.鈥�
Trailcam images still include some grainy black-and-whites. But this is changing.
Lately, grainy black-and-white images are being overtaken in many cases by crisp color images. That these images include shots of famously secretive animals like Canada lynx and Florida panthers makes them all the more wonderful.
Sometimes, trailcams capture high dramas that would otherwise elude human eyes.
Trail cameras sometimes document showdowns between species.
And then, too, are moments of serene beauty.
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