Archive | October 2019

October #SuperSnap

This month’s #SuperSnap features a red fox (Vulpes vulpes) as it scurries around a snowy Racine County forest in search of a meal – which seems quite fitting with our first snow of the season!

As one of our resident species that doesn’t hibernate during Wisconsin’s frigid winters, a red fox will grow a long, thick fur coat to keep warm. A huge thanks to Zooniverse volunteers @bzeise and @cjpope for nominating this crimson critter!

Continue classifying photos on Zooniverse and hashtagging your favorites for a chance to be featured in the next #SuperSnap blog post. Check out all of the nominations by searching “#SuperSnap” on the Snapshot Wisconsin Talk boards.

Snowy Spotting: Wisconsin’s White Deer

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

Photo by Snapshot Wisconsin volunteer John Gorman

Although white-tailed deer are common in Wisconsin woods, we never seem to grow tired of pointing them out along the highway, watching them traverse our backyards and observing them on hikes. But as temperatures drop and snow falls, certain members of our herd will become harder to spot.

Al, a Vilas County trail camera host, recounts seeing one of these alabaster animals in 1994: “As we were sitting on the deck, a white deer appeared in the bright sunshine on the far side of the lake. It appeared to not only be white but glowing with a light from within, surrounded by the light green spring vegetation,” Al says.

Although seeing one can be striking, white deer are just like normal deer except for their fair coats. DNR researchers sampled the entire Snapshot Wisconsin dataset to piece together this map of where white deer were flagged using comments on MySnapshot and tagged photos on Zooniverse. They found that sightings occurred in 12 counties across the state, but were most frequent in central and northern Wisconsin.

WhiteDeerSitesMap

A white deer’s coloring is caused by a lack of melanin in the deer’s skin, but they aren’t necessarily always albino. True albinism is extremely rare, and an albino deer would have pink eyes, ears, hooves, all-white fur and poor eyesight. It’s more likely that Wisconsin’s white deer population is mostly leucistic, which is caused by a recessive genetic trait found in about 1% of all white-tails.

Leucistic deer (commonly referred to as “piebald deer”) can have a variety of white, brown or black markings. Some leucistic deer are akin to pinto horses, while others may have a completely bleached coat with black hooves and noses. The trick to identifying a leucistic deer from an albino is in the eyes. Deer with pink eyes are most likely true albinos, whereas piebalds have gray, blue or black eyes because albinism affects eyes whereas leucism does not.

While differentiating the two may be tricky, the law is clear. According to page 21 of the 2019 Wisconsin DNR Deer Hunting Regulations, it is illegal to “possess albino or all-white deer which are entirely white except for the hooves, tarsal glands, head and parts of the head unless special written authorization is obtained from the department.” Currently, this is true in all areas of Wisconsin.

Photo by Snapshot Wisconsin volunteer John Gorman

Nature photographer Jeff Richter came eye-to-eye with a white deer nearly two decades ago, and he’s been dedicated to capturing their beauty on camera ever since. Richter is the photographer of the book “White Deer: Ghosts of the Forests” by John Bates and told In Wisconsin Reporter Jo Garrett that despite the photographs, some people still believe they’re made up.

“We’ve actually had a couple of stores where clerks overheard people that’ve picked up the book and were looking at it and said, ‘Boy this is really neat, if only they were real,’” Richter said.

They’re real, alright. The one Al spotted all those years ago left a palpable impression on Al and his wife who, at the time, were looking to buy a house. They spotted the white deer across the lake when they were considering the purchase of what is now their current home.

“It actually may have had a small influence on the purchase of our home!” Al says.

Whether they’re common in your neck of the woods or not, white deer are striking animals. The stark contrast of their coats against Wisconsin woodlands makes them a pearly find among the herd. Keep your eyes peeled and your camera ready now, before they blend into a blanket of snow, perfectly hidden throughout the winter months.

Deer Rutting Season – Iowa County Bucks

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. 

Are you ready for deer rutting season? The deer rut coincides with a sharp spike in deer images for the Snapshot Wisconsin project, and offers trail camera hosts the opportunity to capture some exciting series like the below example from Iowa County!

This slideshow requires JavaScript.

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/.

Moving Through the Seasons: Annual Activity Patterns in Deer

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

M2E57L166-166R399B382

Wisconsin is renowned for being home to a well-established population of white-tailed deer. They are an undeniably important part of Wisconsin’s forests and farmland and are the animal that appears most frequently on Snapshot Wisconsin trail cameras. Since its inception in 2016 the project has accrued a massive supply of deer photos. This vital cache of information offers researchers the opportunity to make population-level observations about things like movement and activity patterns, and how these change with the seasons.

Deer_Age_Sex_Class_BreakdownOut of a sample of 1.4 million Snapshot Wisconsin trail camera photos of deer, antlerless deer take the lead at 63%. The remaining 37% comprises antlered (13%), adult unknown (15%) and fawns (8%).

In their ongoing analyses of these photos, scientists at the Wisconsin DNR have noted that deer show strong crepuscular patterns near both the summer and winter solstices. The word crepuscular refers to the interim between night and day, or both dawn and dusk. Deer are more active closer to sunrise and sunset than they are at any other time of day across any season. In winter, there is an observable preference toward sunset – most likely because afternoon is the warmest time of the day, and therefore the best for foraging. The opposite goes for the longer days in summer, when deer seem to prefer sunrise, as it is cooler and foraging at that time is less energetically expensive.

Crepuscular_seasonsDuring the summer, antlered deer are the most likely to stick to this crepuscular pattern. On the other hand, antlerless deer and fawns are a little more unpredictable. Fawns are generally more active throughout the day, as are antlerless deer, though to a lesser extent. Antlerless deer are also more active through the night. Assuming that most antlerless deer are does, their deviation from the crepuscular pattern can be attributed to their need to move to and from spots where they drop their fawns in the time following birth. Despite their penchant for daytime activity, after the first 12 weeks fawns begin to mirror the activity of their mothers, gradually falling into the recognizable crepuscular pattern.

 

Crepuscular_summerAs for winter, both antlered and antlerless deer are seen to be most active at sunset. At this point, fawns are indistinguishable from does and are therefore not differentiated from the rest of the population in the analysis. During the winter, antlered deer are more active during the night and less active during the day than antlerless. Predictably, the annual rut drives a significant uptick in activity for male deer in late October, a pattern familiar to Wisconsin drivers who may be liable to encounter deer more frequently around the same time.

Crepuscular_Winter1Snapshot Wisconsin’s growing cache of deer photos sheds light on deer activity as it varies through the seasons and even day-to-day. Recognizing these patterns bolsters our knowledge of how deer interact with and move through the landscape. These photos are also used to investigate population dynamics and determine fawn-to-doe ratios to better track the growth of the herd. Such a plentiful supply of information on an important species like deer is of great value to our researchers, whose analyses are a critical component of wildlife management decision-making at the Wisconsin DNR.

“The Velvet King”

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. 

Snapshot Wisconsin trail camera host Race from Polk County recently passed along a favorite image from their Snapshot Wisconsin trail camera. In Race’s words, “I call him the velvet king”.

SnapshotSaturday_10.5.19

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/.