The Joy of Trail Cams
All photos and videos in this column are from trail cams on the mountain placed and monitored by the Scotts. (If you’re reading this via email or in a feed reader, you may have to click through to see the videos.)
Almost as soon as they settled into their new home, back in 2009, our caretaker couple — Troy and Paula Scott — installed three strobe cameras. As avid hunters, they were interested initially in monitoring the movements of deer over our square mile of mountain property.
But soon they were capturing other creatures on their cameras, especially at night. Paula quickly became the chief monitor of their cameras, and when the company that produced their strobe cameras — Wild Game Innovation — came out with video cameras, they purchased three of them.
Paula admits that monitoring the cameras throughout the year is addictive to her. She used to dislike winter, once hunting season ended, but now it’s her favorite time of year. That’s because she uses bait to attract a wide range of wild creatures. She hangs a discarded deer carcass by a wire from a tree limb, so it swings a foot or two off the ground directly in front of a camera.
Of course, when bears are abroad, she does not use bait, although she did get a bear on the surprising date of February 27. And that’s what she likes most about the cameras. She learns more about animal behavior especially with the video cameras. In less than two years, she has gotten excellent footage of 15 species of birds and mammals.
Her favorite sighting so far has been of two different fishers that kept returning to the bait. One especially she describes as a “camera ham.” It swung back and forth with the carcass and often faced the camera. Then it turned on its back and rolled with the carcass. All the while it seemed puzzled by this strange source of food.
Both Paula and I have had excellent sightings of fishers in our woods. We’ve also seen tracks in the snow. But the video footage of fishers gave us a whole new perspective on fisher behavior.
Watching two raccoons and an opossum feeding peacefully around the carcass was another surprising behavior observation for Paula.
“I figured they would be competitive and they weren’t,” she says.
She was also surprised that an American crow fed beside five turkey vultures.
And both she and Troy were amused and chagrined when an old hen decoy they had used to unsuccessfully attract gobblers years ago proved irresistible to six jakes at a time. She even has a video of a gobbler displaying in front of the decoy.
Besides the fishers, her other favorite sightings are several photos of a bobcat at the bait at night and a lovely video of a red-tailed hawk near the bait during a snowy day. I’m particularly fond of photos she has of red and gray foxes, despite the presence of coyotes in our area, because coyotes are supposed to prey on red foxes.
Recently they used a camera to find out what was chewing on their new deck at night. As they suspected, it was a porcupine. Instead of killing it, they put a cayenne pepper mixture on the deck and so far it’s kept the porcupine away.
Their original plan, to document deer, also has worked out well. They even have videos of a buck making a scrape and putting his scent on an overhanging limb. Paula cautions, though, that putting the cameras out during deer breeding season gives a false sense of the number of bucks in a hunting area because bucks come in from adjoining properties in search of doe.
When targeting deer, they put the cameras along obvious deer trails, leave them for a month, and then switch them. For other animals, it depends on the time of year and how successful the location is in capturing wildlife footage.
Learning how to obtain good images during the day means positioning them so that the sun doesn’t shine on them, otherwise, you end up with a lot of white footage, she says. You also have to hope that a bear won’t take issue with them. Paula’s brother-in-law Jeff had one ripped off and stomped into pieces, but so far they’ve been lucky. Only two cameras have been pulled down but not damaged.
Paula says in summary that, “these cameras, if you utilize them all year, pay for themselves. If you have a deer interest, as we did, and invest in cameras, you see it’s just not deer out there. It’s a lot of things.”
a bobcat at the bait pile
Discovering what’s out there has tempted folks throughout the world to invest in trail cameras. One writer friend, Ken Lamberton, recently posted on Facebook a beautiful photo of a cougar on a fallen tree in the Mule Mountains of southern Arizona where he and his wife Karen live.
Speaking of cougars, Valentine, Nebraska businessman Kirk Sharp has 16 trail cameras posted around his ranch, which is a half-mile north of Rocky Ford on the Niobrara River in the wild north-central section of Nebraska. One of his cameras, mounted on a wooden fencepost, captured a cougar closely chasing a deer at 11:00 p.m. It was the first authenticated footage of a cougar chasing prey in the state, although since there was a deep canyon directly in front of them, no one knows the outcome.
James Hill III of Waterford Township, Erie County, Pennsylvania wondered what was taking the suet at his feeders. Hill, the founder of the Purple Martin Society, has a 150-acre wildlife sanctuary. Although he figured a bear was probably doing the damage, he put out a camera with a motion detector. To his surprise it was a sow with two cubs sharing the suet with them.
“I was astonished,” Hill says. “I never figured there’d be a family. I’m happy to have them.”
While individuals are enjoying their cameras, and finding out more about wildlife on their properties, so too are wildlife biologists. For instance, two researchers from Texas Tech University — Blake Gresham and Phil Borsdorf — have been studying the endangered lesser prairie chicken at The Nature Conservancy’s Yoakum Dunes Preserve near Lubbock, Texas. By erecting remote video cameras on 15 water tanks at the Preserve, they photographed 800 visits to the tanks by lesser prairie chickens, disproving the belief that the birds don’t need open water because they get enough moisture, except during drought, from succulent plants, insects, and dew. Gresham and Borsdorf found that hens especially needed extra water during nesting time because it takes a cup and a half of water to produce a clutch of ten eggs.
gray fox
Conservation organizations are also starting to utilize trail cameras. A recent article in the Philosophical Transactions of the Royal Society Biological Sciences entitled “Community Structure and Diversity of Tropical Forest Mammals: Data from a Global Camera Trap Network” recounts the results from the world’s first global camera trap mammal study. It involved nearly 52,000 candid shots of 105 mammal species from seven tropical sites around the globe.
The camera traps, low on the ground, made no noise and emitted no light so poachers couldn’t spot them at night. But in Africa, elephants, like our black bears, don’t like strange objects in their territory and tried to crush them.
Jorge Ahumada, the lead author and an ecologist with the Tropical Ecology Assessment and Monitoring Network (TEAM) says that “The study shows for us that for the conservation of these mammal species, size matters; …the size of the protected area and the degree of human activity around it have an effect on the …diversity of these animal communities.”
The Central Suriname Nature Reserve in South America had the most diversity — 28 species — while Nam Kading in Lao Public Democratic Republic in southeast Asia had the least — 13 species. The other sites included Uganda and Tanzania in Africa, Indonesia in Southeast Asia, Brazil in South America and Costa Rica in Central America.
The study ran from 2008-10 under the auspices of Conservation International, the Missouri Botanical Garden, the Smithsonian Institution, and the Wildlife Conservation Society. Because of its success, they have expanded it into 17 wilderness areas in Panama, Brazil, Peru, Madagascar, Congo, Cameroon, Malaysia and India. Ahuda says that these cameras “are reliable observers of the state of our world,” and the study concludes that “camera traps are a useful, efficient, cost-effective, easily replicable tool to study and monitor terrestrial mammals.”
They are also useful for studying large raptors. Dr. Todd Katzner at West Virginia University, along with Kieran O’Malley and Rob Tallman of the West Virginia Department of Natural Resources, is using them for estimating the size of the wintering golden eagle population in the Appalachians including Pennsylvania. The bait is road-killed deer dumped into a small clearing surrounded by tall trees where golden eagles can perch. The bait should be opened along the legs and abdomen to draw in common ravens and other birds that, in turn, alert eagles. Like Paula’s bait, it must be wired to keep it from being dragged off by other animals. The camera should be oriented to the north because that ensures that the sun is to the side or behind the camera, thus preventing white photos. The study is run from January 1 to February 15, and we are hoping to find a good place on our property for Paula to set up a camera.
Hunters in the United States, who first popularized the use of cameras to monitor deer presence, should feel proud of how useful these cameras have become in wildlife monitoring and conservation.
The Unexpected and Expected
wood thrush stunned by a collision with a window
It’s the tenth of August, and I can barely believe my ears. A wood thrush is singing two weeks later than I’ve ever heard one before. Such a wonderful, unexpected gift so late in the season when most birdsong has been replaced by the buzzing and chirping of crickets and grasshoppers. But then it is for the unexpected as well as the expected that I venture outside every day.
Sometimes, during the heat and humidity of August days, the forest seems as empty as it is in winter. Then, through a curtain of leaves, I watch a smaller bird silently chase an immature red-tailed hawk that is still learning how to navigate in its new world.
Behind me, a red-eyed vireo drones its monotonous song while a blue-headed vireo renders a brighter, livelier version of its congener’s song. Eastern wood pewees drawl their “pee-a-wees,” and Acadian flycatchers sharply cry “wee-see.” A flock of cedar waxwings lands on a wild black cherry tree, laden with fruit, and emit their high “zees” as they pluck and eat cherries. Sharp-shinned hawks, recently fledged from the Norway spruce grove nest, sit atop the trees and continuously cry for their parents to feed them. Eastern towhees call their names and northern cardinals sing “cheer-cheer.”
turkey hen in the field
All those songs and calls are expected for August. So too are encounters with wild turkeys such as one I have when early one sunny morning, near the beginning of the Far Field Road, a wild turkey flaps off from a tree branch. Then another follows. A third clucks unseen in the tree branches. When I move, she flies off, accompanied by a gawky teenager. As I continue my walk at least eleven more turkeys flush from the treetops.
During the same heat wave, my husband Bruce and I are driving back from town at noon. At the bottom of our road, Bruce slams on the brakes to avoid hitting a young American woodcock. It continues bobbing its awkward way up the left hand track of the road until it reaches a horizontal road drain covered by open grating that it can’t cross, so it flies off in a flurry. We are both amazed. We have never seen a woodcock closer than a mile from there in the woods near our deer exclosure, and we’ve never seen any young woodcocks on our property even though a couple males perform their sky dance on First Field every March. We conclude that somewhere on our mountain we do have breeding woodcocks.
During a pause in August’s heat and humidity, I watch what I call the march of the bucks from the top of the Laurel Ridge power line right-of-way. Through my binoculars, I see a deer crossing the top of the Sapsucker Ridge portion of the right-of-way. By the way it moves, its head held as erectly as an African woman balancing her worldly goods on her head, I know I’m looking at a buck. Then he slowly turns his head to catch the rising sun, which shines on a huge rack. As he disappears into the woods, a second buck emerges on the right-of-way. His rack is somewhat smaller than that of the first buck, but it is still impressive. After he melts into the woods, a suitable distance behind the super buck, a third buck, with an even smaller rack, ambles across the right-of-way.
antler of a large buck shot on the mountain
Such a scene proves to my satisfaction that bucks stay together when they aren’t breeding and that the one with the largest rack leads. But perhaps I am projecting my own ideas on what may have been coincidence. Still, Leonard Lee Rue III, in his classic The Deer of North America, writes that “In the springtime, white tail bucks are often solitary, or sometimes a big buck is followed by several younger bucks,” exactly what I witnessed except that it wasn’t in springtime, so what I saw still leaves me with questions about relationships between bucks.
Mammal relationships continue to interest me when I surprise three young raccoons in our stream early one August morning. They run up the slope and climb a tree. Five days later, much farther down the stream, I hear what I think is squabbling raccoons. I sit down on Waterthrush Bench, above the stream, and wait. A few moments later, mama raccoon parades down a fallen tree trunk toward the stream, followed by her three youngsters. I remain motionless and hear another squabbling outburst, but tree leaves block my view. After waiting awhile and seeing nothing more of the little family, I continue on down the road and look back up at that tree trunk. Below it is a large tree with a hole at its base, which I assume, but don’t know for sure, is the raccoons’ den tree. I also assume that those three raccoons are the same ones I saw before and that they are ranging a fair distance in search of food.
Luna moth on black walnut tree
Even insects sometimes surprise me. One August evening, a New Jersey visitor shows off his powerful flashlight, illuminating a spectacular, lime-green Luna moth on a black walnut tree trunk in our yard next to the walnut tree where we saw a Luna moth, freshly emerged, 364 days ago. According to David L. Wagner, in his Caterpillars of Eastern North America, the Luna moth’s caterpillar feeds on many forest tree leaves but has “decided local preferences” which include walnuts, as well as birch and black gum leaves in our area and pecan, persimmon, and sweet gum farther South.
But while seeing a Luna moth is an unexpected treat, walkingsticks always appear on the side of our house or on a screen door in August, and those same New Jersey visitors are impressed when I point one out. And any August visitors spend sleepless nights in our guesthouse, kept awake by the thrum of northern true katydids, even as we are lulled to sleep by them.
After years of pushing through the many orb webs of spined micrathena spiders and, indeed, expecting them in August, last August I saw only a few. Had their numbers crashed or was it an off-year for them? Sometimes, even the expected can throw me a curve ball.
But the wildflowers, in August, are predictable. Along our forest paths, the yellow trumpets of entireleaf yellow false foxglove (Aureolaria laevigata) blossom. On the hollow road bank, white wood asters and spikenard flower. Spikenards, which only began appearing several years ago near the bottom of our road bank, have been moving steadily uphill. Last August I found three below our big pull-off, two between the big pull-off and Dogwood Knoll, and two more between the forks and our old corral — a span of well over a mile. Their greenish-white flowers, growing in drooping, compound umbels, always seem too heavy for their stems.
orange jewelweed
Horse-balm and orange jewelweed or touch-me-not also grow along our road, but both are favorite deer foods. Many have been heavily grazed so I visit our three-acre exclosure for a view of shoulder-high jewelweed and waist-high horse-balm in the wetland corner of the exclosure. Late in August, I interrupt a small songbird migration over the exclosure and have a lovely view of a male black-throated green warbler and a magnolia warbler perched on a small ailanthus tree that overlooks the huge bed of jewelweed.
I pause, hoping to see a foraging ruby-throated hummingbird because I know that its needle-thin bill is perfect for penetrating jewelweed flowers. In fact, some ornithologists believe that jewelweed may have changed its floral biology to produce more nectar and encourage hummingbird pollinators. Sure enough, a female whirls in, lands close by on the fence to look me over, and then proceeds to nectar in the blossoms. Although entirely expected, it was lovely nonetheless.
Three days later, I am again hanging over the fence, this time admiring the jewelweed buzzing with native bumblebees. The horse-balm too is abuzz with bumblebees. The female hummingbird flies in to nectar at the jewelweed. She also tries the horse-balm several times, but she quickly rejects it and instead deftly ferrets out every jewelweed blossom amid a sea of horse-balm.
By late August, five species of goldenrod blanket our First and Far fields, and I spend hours “butterflying.” Altogether, I count nine species, including monarchs, common sulphurs, summer azures, an American copper, red-spotted purple, silver-spotted skipper, northern pearly-eye, red admiral, and dozens of cabbage whites.
cabbage white butterfly covered with dew
I’ve never been fond of cabbage whites because they are a European species that first appeared on this continent in Quebec in 1861, according to butterfly guru Robert Michael Pyle in his book Mariposa Road. He says that the cabbage white — Pieris rapae — called the small white in England, may have arrived as pupae on a cabbage crate.
Today, it is our most abundant and widespread butterfly even though some folks erroneously call it the cabbage moth because of its fluttery flight. Pyle calls it “adaptive” and “resilient,” even resisting DDT spraying in England while its predatory beetle enemies succumbed. Its preference for members of the cabbage family has earned it the enmity of farmers.
The chrysalis of a cabbage white can be “buffy brown” or “green,” Pyle writes, but its color doesn’t necessarily match its background, the so-called “chameleon model.” Instead, Pyle thinks that the hypothesis “balanced polymorphism,” in which “populations adapt a ratio of green to brown expression that optimizes the chances of finding the ‘right’ substrate color in a given environment — more green in a wet setting, more brown in the desert, but some of each in either,” may be the answer. In other words, they hedge their bets. No wonder they are so successful.
Pyle also refuses to call the red admiral (Vanessa atalanta) by its current name. he says that it’s a contraction of the Old English name — red admirable — and that it is not related to the true admiral butterflies in the genus Limenitis (the red-spotted purple, white admiral, and viceroy), but to the American lady (Vanessa virginiensis) and the painted lady (Vanessa cardui). I think I agree with him. The red admiral certainly looks more like the ladies, although its reddish-orange bands on its front and hind wings on a black body make it the loveliest of its congeners.
old chestnut oaks
As the month draws to a close, I mark the death of the huge chestnut oak tree along the Far Field Road that has harbored many wintering porcupines in its branches. Some branches now have brown, withered leaves and others are bare. Is it a victim of drought, old age, or both? Like me, it is broken down by our many years on earth and will leave its progeny to carry on the only form of immortality life on earth can hope for.
The chestnut oak has finished its life span. I have not, but its death is a reminder to me to cherish in my life both the expected and the unexpected every month of the year.
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All photos by Dave Bonta, taken on Brush Mountain.
Marcia with golden eagle (photo by Todd Katzner)
Marcia Bonta is the author of nine books and over 300 magazine articles. The blog portion of this website includes her popular “Naturalist’s Eye” column from Pennsylvania Game News, reprinted here on the 1st of each month. Unlike typical blog entries, these columns are written months in advance, usually about things that happened during the previous year. Read more…
