Archive by Author | Sarah Cameron

Maps of the Zooniverse

The following piece was written by OAS Communications Coordinator AnnaKathryn Kruger for the Snapshot Wisconsin newsletter. To subscribe to the newsletter, visit this link

The opportunity to classify photos of wildlife from across Wisconsin draws a diverse array of individuals to our Zooniverse page. Some volunteers are trail camera hosts themselves and enjoy classifying photos from other camera sites. Zooniverse also offers this opportunity to those who are unable to host a camera but still wish to participate in the project.

The maps here were created using Google Analytics data, which can anonymously record information about users who access a webpage, such as their nearest city. This data shows us that Snapshot Wisconsin reaches an audience far beyond Wisconsin, and even beyond the United States! In total, volunteers from 696 cities across 41 countries have interacted with the Snapshot Wisconsin Zooniverse page since 2016. 190 of those cities are in Wisconsin.

Each dot represents just one city, regardless of the number of individuals who accessed the site in that location. For example, the dot for the city of Madison could represent thousands of users. Zooming in on Wisconsin, we see that many dots are centered around the most populous areas, such as Madison, Milwaukee, Minneapolis and Chicago. This pattern can be attributed to the fact that these areas also host the highest concentration of suburbs.

Regardless of the volunteer’s location, each classification we receive is important to the success of Snapshot Wisconsin.

Wisconsin Map

World Map

Snowy Bobcat Scene

Snapshot Saturdays are a weekly feature on the Wisconsin Department of Natural Resource’s Facebook page. Give them a Like to keep up with recent DNR news and to view the weekly Snapshot Saturdays. 

Bobcats have a coat that provides them with an excellent layer of camouflage for most of the year in Wisconsin. In contrast to the stark white snow, we get the chance to capture some amazing pictures of bobcats, such as this one captured by a Snapshot Wisconsin volunteer.

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Interested in hosting your own Snapshot Wisconsin camera? Visit our webpage to find out how to get involved: https://dnr.wi.gov/topic/research/projects/snapshot/.

Evaluating Project Participation Through Zooniverse

The following piece was written by OAS Communications Coordinator AnnaKathryn Kruger for the Snapshot Wisconsin newsletter. To subscribe to the newsletter, visit this link

One of the easiest ways to participate in Snapshot Wisconsin is by classifying photos through a website called Zooniverse. Zooniverse is a crowdsourcing service that is accessible to anyone, anywhere, and the site has hosted Snapshot Wisconsin since 2016. Snapshot Wisconsin’s most prolific Zooniverse volunteer has contributed over 65,000 classifications to the project’s dataset. To date, 1.9 million trail camera photos have been processed through Zooniverse, and more than 7,500 different individuals have registered to participate.

Zooniverse volunteers play a pivotal role in Snapshot Wisconsin. Analyzing volunteer participation gives staff a better idea of how to effectively engage volunteers and can also offer researchers a look at how patterns in participation relate to the overall quality of the data acquired from the platform.

In the interest of exploring a quantitative assessment of volunteer participation in Snapshot Wisconsin through Zooniverse, researchers conducted a Latent Profile Analysis (LPA) of our volunteers. LPA can be used to organize a given sample size of people into groups based on observable variables, such as user activity over time. Through this, researchers were able to ascertain how many different groups of people exist in the sample, which individuals belong to which group, and what characteristics are unique to each group. This allowed researchers to hone in on specific patterns in user engagement.

Researchers identified measurable variables unique to each volunteer and their activity on Zooniverse between November 2017 and February 2019. These included the number of days each volunteer was active, time elapsed between active days, and the amount of time volunteers spent on the site on active days. From this, researchers parsed volunteers into three profiles: temporary, intermittent and persistent.

Volunteer Groups

Profiles of Snapshot Wisconsin volunteer participation on Zooniverse

Temporary volunteers are those who exhibited rigorous participation, but only for a short period of time. Intermittent are those characterized by the significant amount of time elapsed between a relatively small number of active days. Persistent are those who demonstrated high levels of activity across the entire period examined.

Measures of accuracy specific to each group revealed that temporary volunteers demonstrate lower accuracy in their classifications compared to intermittent volunteers. Though intermittent volunteers tended to allow more time to go by between active days, the consistent practice ultimately made their classifications more accurate.

In this instance, we may turn to an old adage: practice makes perfect. It comes as no surprise that practice and accuracy are correlated, and that volunteers become better at classifying photos with more time spent doing so. In the graphic on the right, all four photos are of porcupines, though they are of varying degrees of difficulty when it comes to classification. Though classifying photos like these may be tricky at first, over time certain characteristics begin to stand out more readily – a porcupine may be identified by their lumbering gait, or the way that their quills appear from different angles and in different light. The more frequently one sees these traits, the easier they become to identify. Volunteers who participate at any level, whether temporary, intermittent, or persistent, are of great value to the project, and the more time spent on Zooniverse, the more likely that the classifications assigned to each photo are accurate.

Porcupine

Citizen science is an integral part of the Snapshot Wisconsin project, and is in fact core to its mission, which is to rally the knowledge and resources of citizens across Wisconsin and throughout the world to build a comprehensive and highly accurate portrait of Wisconsin wildlife. No two Zooniverse volunteers are quite the same, and each individual informs our understanding of how citizen science can be utilized effectively in research. No matter how one chooses to participate, participation alone brings us closer to our goal.

The Magnificent Red Fox

Snapshot Saturdays are a weekly feature on the Wisconsin Department of Natural Resource’s Facebook page. Give them a Like to keep up with recent DNR news and to view the weekly Snapshot Saturdays. 

The magnificent red fox isn’t one to fear Wisconsin winters, in fact many Snapshot Wisconsin volunteers capture their most remarkable red fox pictures during our snowiest months! Check out this scene captured on a Grant County Snapshot Wisconsin camera.

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Did you know you can view and classify photos collected from Snapshot Wisconsin cameras across the state at www.SnapshotWisconsin.org?

What is a Group of Elk Called?

Snapshot Saturdays are a weekly feature on the Wisconsin Department of Natural Resource’s Facebook page. Give them a Like to keep up with recent DNR news and to view the weekly Snapshot Saturdays. 

What is a group of elk called?

While the common terminology for a group of elk is a herd, another answer may surprise you. According to the U.S. Geological Survey, a group of elk may also be referred to as a “gang” of elk.

Regardless of what you want to call them, check out this herd (or gang) of elk captured on a Snapshot Wisconsin trail camera in Sawyer County!

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Interested in hosting your own Snapshot Wisconsin camera? Visit our webpage to find out how to get involved: https://dnr.wi.gov/topic/research/projects/snapshot/.

Rare Species of Wisconsin

Let’s take a dive into the rare mammals of Wisconsin! Although we do not expect to see many of these species captured on Snapshot Wisconsin trail cameras, having the option available to volunteers provides an excellent opportunity to identify their occurrences in the state. Each month, Snapshot Wisconsin staff members review any images classified as one of the following species to determine the validity of the identification. Volunteers have already accurately identified multiple moose, a marten and even a whooping crane on camera! Read below to find out more and prepare yourself for spotting even more rare species hiding in the massive Snapshot Wisconsin dataset.

Somewhat unlikely:

Whooping crane (Grus americana) – Whooping cranes are extremely rare, but there is a small introduced population in Wisconsin. These towering birds are snowy white with red crowns and black-tipped wings that can be seen in flight. The species declined to around 20 birds in the 1940’s but number about 600 today.

More likely: sandhill crane. Sandhill cranes have slate gray to rusty brown bodies, white cheeks and red crowns. Depending on the iron content of the soil in the area, sandhill cranes can appear lighter or whiter in color.

WhoopingCrane

Marten (Martes americana) – The American pine marten was extirpated from Wisconsin in the early 1900’s but has since been reintroduced to certain parts of the state. The fur of a marten varies from dark brown to tan and may contain yellow tones. Marten usually have a paler head and dark legs (though color is difficult to tell in nighttime photos when marten are most active). Marten also have a whitish cream to orange throat and relatively large rounded ears.

More likely: mink, weasel or fisher. Mink are a small, long-bodied animal that is typically found near water. The fur of a mink is dark brown and they sometimes have white patches on the chin and chest. Compared to marten, mink are more uniformly colored and have smaller ears. All weasels are small and have long, thin bodies with short legs. In the summer, weasels are light to dark brown with white markings on the chin, throat, chest and/or stomach, during the winter the coat of weasels turns to white. Weasel are smaller than marten, and have less bushy tails. Fisher are a long-bodied species with very long tails and have dark brown fur all year long. The feet and tail are generally darker than the body and head, and some fisher have a cream-colored patch on the chest.

Marten

Moose (Alces alces) – Moose were extirpated from Wisconsin in the late 1800’s, but visitors from farther north are occasionally spotted in upper parts of the state. They are one of the largest land mammals in North America and have a blackish brown body with a long nose. Males have large palmate antlers and the young are reddish brown. Because they are such a tall animal, it is often that only the legs and feet are visible in Snapshot Wisconsin photos.

More likely: elk or deer. Elk have a large, thick body with long slender legs. They have a dark brown head and neck, lighter body and a cream-colored rump. Males have antlers which fork off a main branch and a dark shaggy mane that hangs from the neck to the chest. The young have white spots. Deer are lightly built, and grayish brown to reddish brown in color. The underside of their short tail is white. Males have antlers which fork off a main branch and the young are reddish brown in color with white spots.

Moose

Feral pig – Feral pigs are non-native, domestic pigs that have become feral after living in the wild. Sightings are more common in the southern U.S. but are occasionally reported in Wisconsin. They are stocky animals and can vary greatly in size and color. Compared to domestic swine, they have longer snouts, longer course hair, a straight tail, and may have tusks.

More likely: deer, black bear or other large mammal. Due to their large stature, a feral pig can be misidentified as other more common large animals, such as deer or bear. Deer are lightly built, and grayish brown to reddish brown in color. Black bear are large, round animals with dark brown or black coats.

Feral Pig

Highly unlikely:

Lynx (Lynx canadensis) – There are no known breeding populations of lynx in Wisconsin, though an occasional visitor from Canada will pass through. The coat of this cat varies from gray to grayish brown with spots on the legs and belly. The lynx has long black tuffs on the ears, short black-tipped tails, long legs, and very large furry feet.

More likely: bobcat. Bobcat coats vary from gray to reddish brown, typically with spots, especially on the belly. Bobcats have stripes on the insides of the legs, and telltale white markings on the backs of the ears. They have short tails that, on the tip, are black above with white below.

Lynx

Cougar (Puma concolor) – There are no known breeding populations of cougars in Wisconsin, though there have been several recent sightings of wandering young males from out west. The coat of this large slender cat varies from yellowish brown to grayish brown with a lighter color belly and throat. Their head is relatively small and the area behind the ears is black. Cougars have a long black-tipped tail.

More likely: bobcat. Bobcat coats vary from gray to reddish brown, typically with spots, especially on the belly. Bobcats have stripes on the insides of the legs, and telltale white markings on the backs of the ears. They have short tails that, on the tip, are black above with white below.

Cougar

EXTREMELY unlikely:

Jackrabbit (Lepus townsendii) – Though formerly abundant in Wisconsin, this species is now extremely scarce. Jackrabbits’ upper side is grayish brown in color with gray or white on the underside, and in the winter, the fur is white. The tail is white year-round. Jackrabbits have ears which are longer than the head.

More likely: cottontail rabbit or snowshoe hare. The fur of the cottontail rabbit is brown in color with longer gray and black guard hairs, giving it a grizzled appearance. Their fur does not typically vary with seasons, and their ears are often shorter than the hind feet and are small in proportion to the body. A snowshoe hare is slightly larger than a cottontail, and their coat varies with the seasons turning from dark brown/reddish to white during winter months. Hare have long feet and black tipped ears are large in proportion to the body.

Jackrabbit

Spotted skunk (Spilogale putoris) – The spotted skunk hasn’t been seen in Wisconsin in 30+ years, and only in the southwestern part of the state. They have the same black fur as striped skunks, but instead have white blotches all over. The spotted skunk’s bushy tail is white underneath and at the tip.

More likely: striped skunk. Striped skunks bear a white stripe that runs down the center of their face, usually have two white stripes going down the back, and a long/fluffy black tail.

SpottedSkunk

Wolverine (Gulo gulo) – Wolverines are considered extirpated from Wisconsin. They have thick, coarse, dark brown fur with light brown stripes starting at the shoulders and traveling along the body to the base of the tail. Wolverines have a fluffy tail and often have a light-brown face.

More likely: porcupine, skunk or badger. The body of a porcupine is stout with an arched back and covered in quills. Porcupines appear dark brown in color and have small round ears and tiny dark eyes. Striped skunks bear a white stripe that runs down the center of their face, usually have two white stripes going down the back, and a long/fluffy black tail (though the pattern of striped skunks is often distorted during nighttime images). Badgers have low, wide bodies with short legs. The fur of a badger ranges from grayish to reddish along the back with a buff colored underside. Badgers have distinctive black patches on their face and a white stripe extending from nose, down the back.

Wolverine

Snowy Wisconsin Turkey

Snapshot Saturdays are a weekly feature on the Wisconsin Department of Natural Resource’s Facebook page. Give them a Like to keep up with recent DNR news and to view the weekly Snapshot Saturdays. 

As we trudge into the depths of Wisconsin winter, are you prepared?

While turkeys aren’t our most graceful bird, we can all take lessons from them when it comes to bundling up to stay warm amongst the snowy cold!

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Did you know you can view and classify photos collected from Snapshot Wisconsin cameras across the state at www.SnapshotWisconsin.org?

Striking White Buck Captured on Camera

Snapshot Saturdays are a weekly feature on the Wisconsin Department of Natural Resource’s Facebook page. Give them a Like to keep up with recent DNR news and to view the weekly Snapshot Saturdays. 

Dennis has been watching this white buck move through the property where he monitors one of his trail cameras for the Snapshot Wisconsin project. Over the course of the year he has witnessed hundreds of pictures of this deer, including several nights of bedding in front of the camera.

During Dennis’s most recent batch of photos he managed to capture this incredible image, he couldn’t wait until he finished reviewing his photos before sending this one to the Snapshot Wisconsin staff. Check it out below!

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Interested in hosting your own Snapshot Wisconsin camera? Visit our webpage to find out how to get involved: https://dnr.wi.gov/topic/research/projects/snapshot/.

Wisconsin’s Smallest Weasel Fosters Big Connections

The following piece was written by OAS Communications Assistant Claire VanValkenburg for the Snapshot Wisconsin newsletter. To subscribe to the newsletter, visit this link

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Shifty colleagues, dishonest enemies and slimy adversaries are often referred to as “weasels,” but is this little mammal truly worthy of such a harsh reputation?

In truth, weasels are sprightly balls of energy and elusive hunters. The least weasel is both the smallest species of weasel in Wisconsin and the smallest carnivore in the world. It evades detection so well that they have been identified as a Species with Information Needs in the Wisconsin DNR’s Wildlife Action Plan.

According to Richard Staffen, Zoologist and Conservation Biologist at the Natural Heritage Conservation (NHC), we don’t know much about least weasels because they are not sought after as a furbearer. They are captured infrequently, and their small size exhibits low commercial fur value.

“There is little population data being collected, so not much is known on how they are doing,” Staffen says.

In an effort to bolster our understanding of the least weasel, Snapshot Wisconsin and the NHC have enlisted the help of a few University of Wisconsin-Madison students to tackle a collaborative classification project.

“You’d be surprised how well weasels can camouflage into their environment!” says Elizabeth Cleaveland, who recently completed a work-study position with the Wisconsin DNR as a graduate student with the Nelson Institute for Environmental Studies.

Cleaveland worked with Staffen last year to classify roughly 400 Snapshot Wisconsin triggers categorized as weasels by citizen scientists. Cleaveland’s successor is Mace Drumright, who says that while differentiating between species can be challenging, the work is important to better understand rare species like the least weasel.

“Weasels, and mustelids in general to a degree, have a tendency to escape notice and live relatively secretive lives, so any further insight into their behaviors and habitats is useful,” says Drumright.

Of the ~400 triggers students have worked to classify, Staffen says roughly 300 triggers are identifiable enough to assign a species. The least weasel shows up most infrequently on Snapshot cameras. Cleaveland recounts feeling surprised to see a least weasel on the Snapshot Wisconsin database, noting her excitement to learn that the species was still in the state.

“There are a couple of goals tied to this project, the first one being identifying small mammals in the area and the habitats they are utilizing. This is helpful in determining if the species is still present in the area, what types of habitat(s) they are utilizing, and if any wildlife management decisions need to be addressed,” Cleaveland says.

Drumright suspects that, other than martens, the least weasel could be the least photographed Mustelid species on Snapshot Wisconsin cameras.

“Hopefully this project will give better insight into the population and how they’re interacting with their environment,” says Drumright.

Staffen and the NHC are still working on analyzing the data to determine what percentage of the population the least weasel represents compared to other Mustelidae. But he says the information gathered from Snapshot Wisconsin data can be used in conjunction with trap data from Wisconsin fur trappers and small mammal surveys to make informed decisions on the species’ status.

“I think it is one useful tool, of only a couple, to assess the current population status of these infrequently encountered or under-reported species,” Staffen says.

Staffen and the Snapshot Wisconsin team hope to expand the collaboration, moving to chipmunk and squirrels next, which is another group of triggers that are not classified to the species-level.

“I just think it is a win-win project. The students really enjoy working on the project, they learn more about identification of these animals and their biology, we get some information on status and distribution and the Snapshot project gets a more refined classification.”

Keep an eye out for our shy woodland friend. Rather than impish, consider him tactful yet discrete. However you choose to view him, here at Snapshot Wisconsin we believe that while he may be little, he is not least.

Vernon County Red Fox

Snapshot Saturdays are a weekly feature on the Wisconsin Department of Natural Resource’s Facebook page. Give them a Like to keep up with recent DNR news and to view the weekly Snapshot Saturdays. 

Red fox can often be identified as the black booted, speedy blur zooming past your trail camera at night (at speeds of up to 45 mph!). These primarily nocturnal animals don’t frequently appear during the daylight on cameras, but when they do it can produce a pretty unforgettable image.

Have a look at this striking red fox captured on a Vernon County Snapshot Wisconsin trail camera!

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Did you know you can view and classify photos collected from Snapshot Wisconsin cameras across the state at www.SnapshotWisconsin.org?