Tag Archive | White-tailed Deer

Un-deer the Weather

Snapshot Wisconsin cameras capture tons of deer throughout the year. In fact, deer account for nearly two-thirds of the wildlife captured on Snapshot Wisconsin trail cameras. Since there are so many photos of deer taken, we see some deer that look like they might be hurt or have a disease. Here are a few examples of deer who are looking a little under the weather and what might be ailing them:

Swollen chest

Nancy (or known by her Zooniverse handle @NBus) is a wildlife health expert here at the Wisconsin DNR who let us know that a swollen chest like this is not unusual in deer. Nancy shared the following response to this image, “It is likely either an abscess (pus-filled) from a penetrating wound that carried bacteria under the skin or a seroma (serum-filled; serum is the non-cellular portion of the blood, not the red and white cells) from a blunt trauma to the chest. The chest is a common part of the body for deer to injure as they run and impact something. And gravity then allows the accumulated pus or serum to gather in a bulge on the lower chest. In either case, the body will likely be able to resolve it and the deer will be fine.”

Warts

Another example that shows up semi-frequently is warts. Like many mammals, deer are susceptible to warts caused by a virus. These growths, called cutaneous fibromas, are caused by the papilloma virus. Usually the deer’s immune system can keep the warts in check or get rid of them. Sometimes if the warts appear in areas that obstruct the deer’s ability to eat, they could become a larger issue (source).

Thin and scraggly

Finally, we will touch on thin or scraggly looking deer. Especially in the spring, deer can start looking very skinny and ragged. This one above is shedding its winter coat and is probably a little thin since this was taken in the middle of May in Wisconsin, when food can be hard to come by. However, this is not outside the norm for deer this time of the year. We are often used to thinking of an image of plump deer, but in reality, the appearance can vary greatly based on time of year and food availability. 

If you want to see more examples of common deer health issues please visit our previous deer health blog titled, “Is this deer sick?” from February 2018. Learn more about Wisconsin health by visiting this DNR link

2019 Spring Fawn Survey

The goal of the Southwest Wisconsin CWD, Deer and Predator Study is to comprehensively examine factors that could impact deer survival and deer population growth in southern Wisconsin. Those include Chronic Wasting Disease, predation, habitat suitability and hunter harvest. In late May and early June, members of the Snapshot Wisconsin team had the opportunity to help out with the project’s spring fawn search. Snapshot staff joined the CWD team and volunteers from across the state to search for fawns in the study areas near Dodgeville.

Southwest Wisconsin CWD, Deer and Predator Study Areas

Study areas to the east and west of Dodgeville, WI.

On each day of the 3-week survey, DNR employees and volunteers assembled into a line spread fingertip to fingertip to sweep across the survey area. It takes a keen eye and diligent searching to spot a fawn, as newborn fawns can be as small as a football. When less than 5 days old, fawns stay bedded down and in hiding amongst tall grass and brush. Does often leave their fawns for hours at a time to give the fawn a better chance of survival.

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When a staff member or volunteer came upon a fawn, they rested their hands on the fawn’s back to gently keep the fawn from getting up. A children’s sock was then placed over the fawn’s eyes to keep it calm as DNR employees promptly fitted the fawn with ear tags and a radio collar. These collars are made of elastic material with pleats sewn into them that pop, expand, and eventually fall off as the fawn grows – usually within 18 months. Important information such as the fawn’s sex, weight, and rear leg length was recorded before carefully placing the fawn back where it was bedded down.

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The Snapshot Wisconsin team learned a lot about fawns, CWD, and how the Southwest Wisconsin CWD, Deer and Predator Study gathers valuable data about white-tailed deer. This unique fieldwork opportunity also gave our team an up-close look at the wildlife we usually see in trail camera images!

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For more information, please visit the Southwest Wisconsin CWD, Deer and Predator Study’s webpage.

Check out these other Snapshot Wisconsin blogs related to the project:
1) Southwest Deer and Predator Study
2) In the Field with the Southwest CWD, Deer and Predator Study

Piebald Deer 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. 

Piebald deer make for quite the spectacle, but what is responsible for their unique coloration? Recessive genes must be inherited from both parents to produce a piebald deer, making them quite rare. In fact, only 2% of deer present this coloration! Although it is illegal to shoot a white deer, piebald deer are legal to harvest during regulated seasons in Wisconsin.

Check out this piebald buck captured on a Snapshot Wisconsin camera in Iowa County last fall.

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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/.

Snapshot Saturday: June 22nd, 2019

There are many telltale signs of summer, but our favorite here at Snapshot Wisconsin is the appearance of fawns on camera. Fawns are born with reddish brown coats and a collection of white spots; this coloration helps them blend in with the forest until they begin molting into their winter coats.

Have you “spotted” any fawns on your cameras yet?

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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? It’s a fun activity for the whole family!

The Process of Deer Antlers

Did you know that white-tailed deer (Odocoileus virginianus) antlers are one of the fastest growing tissues known to man? For instance, human fingernails grow between 1 to 10 centimeters a year whereas white-tailed antlers grow several centimeters each day during the growing stage! Unlike human fingernails, deer antlers are composed of veins, arteries, vessels, and cartilaginous tissue. Many hunters believe that the bigger the rack the older the buck. Yet, the inspection of teeth is the only accurate indication of a deer’s age. The greatest antler size within a buck’s life is from age five to seven. Factors sure as age, genetics, and nutrition of the buck determines the magnitude of antler size. Keep reading below to learn how antlers grow and change throughout the year!

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Pedicles, the area attaching the antler to the skull, are first formed on top of a buck’s head during late winter and spring and can reach up to ¼ of the ear-length. Snapshot Wisconsin asks volunteers to classify any deer with formations less than ¼ of the deer’s ear-length as antlerless, while reserving the antlered classifications for more than ¼ of the deer’s ear-length.

To create antlers in early spring, minerals in the ribs and shoulders of the buck are redistributed in his body. Velvet (pubescent skin) covers the antler and provides nutrients through the flow of blood. These nutrients cause antler growth. During the velvet stage, the antlers are very sensitive. Any impact will be painful and could, due to the fragile state, cause breakage. Nevertheless, this sensitivity allows the buck to comprehend the size of its antlers and, eventually, the buck will move through the forest with ease.

By late summer, the antlers are fully grown. Blood flow becomes constricted, causing gradual hardening and calcification. The velvet dies off in response and, like a sunburnt human, the buck becomes annoyed and wants to peel the excess skin off. The buck rubs his antlers on trees to rid himself of the velvet, exposing glabrous antlers. This rubbing strengthens the buck’s neck, which will come in handy during the rut where the buck will compete with other bucks’ antlered attacks.

oneantler

Due to reduced sunlight and testosterone, white-tailed bucks’ antlers fall off around January and February. Their body absorbs the calcium between the antler and pedicle, which weakens the antler, causing it to eventually fall off. If you’re looking for a hobby this time of year, check out shed hunting! Shed hunting is the pastime of searching for antlers that have been naturally shed by antlered bearing mammals. Another great hobby for this time of year is checking out the trail camera photos captured by the Snapshot Wisconsin project! Start viewing and classify photos today!

For more information, please visit these sources:

Snapshot Saturday: March 30th, 2019

This Snapshot Saturday features an early morning white-tailed buck captured on an Iowa 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? It’s a fun activity for the whole family!

Snapshot Saturday: March 9th, 2019

White-tailed deer represent nearly 2/3rds of the wildlife captured on Snapshot Wisconsin trail cameras, ones caught with their tongues out represent a disappointingly lower proportion. Happy Snapshot Saturday!

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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/.

Snapshot Saturday: February 2nd, 2019

If you don’t look closely, you may easily overlook this white doe captured on a Marathon County Snapshot camera. Happy Snapshot Saturday!

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View and classify photos collected from Snapshot Wisconsin cameras across the state at https://www.SnapshotWisconsin.org.

Snapshot Saturday: January 5th, 2019

Our first Snapshot Saturday of 2019 features a wintertime selfie from Iowa County!M2E47L130-129R401B372

View and classify photos collected from Snapshot Wisconsin cameras across the state at https://www.SnapshotWisconsin.org.

Snapshot Saturday: December 15th, 2018

Do you know that feeling you get when your nap is interrupted? Check out this interesting interaction captured between a doe and raccoon on a Snapshot Wisconsin camera.

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Interested in hosting your own Snapshot Wisconsin camera? Visit our webpage to find out how to get involved: http://dnr.wi.gov/topic/research/projects/snapshot/. Classify photos from all the trail cameras at www.snapshotwisconsin.org.