Archive | February 2017

What is this collar for and how does it work?

If you frequent Snapshot Wisconsin, you may have noticed photos of wildlife with funny looking collars around their necks.  Maybe you’ve wondered, “What is this collar for and how does it work?”

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Science Update: Daily Animal Activity

Because Snapshot Wisconsin trail cameras put a time and date stamp on each photo, we are able to capture the diurnal (daytime), nocturnal (nighttime), and crepuscular (active early and late in the day) behavioral patterns of different species. The graphs below show daily activity patterns using the 24-hour clock for three categories of animals captured on Snapshot Wisconsin trail cameras in Iowa and Sawyer Counties from June 1 – September 7, 2016.

Bears were most active during the day and used the midday hours more than any of the other large mammals, while coyotes and deer showed the strongest crepuscular behaviors:


Porcupines were most active in the early morning hours before sunrise. Mustelids were uniquely active during a short portion of the early daytime hours:


Grouse activity was fairly steady through the day while turkey activity increased as the day progressed:


Food for thought: why might it be beneficial for animals to be more active during certain times of the day and not others?

Bait, birdfeeders and bias

You may have heard that Snapshot Wisconsin researchers ask volunteers to place cameras at least 100 yards (~100 m) away from bait and feed. Bait and feed are materials placed outdoors to intentionally attract wild animals, and may include food, scent materials, salt, minerals, grains, birdfeeders, and carcasses. Bait and feed attract really interesting animals that we love to see on camera, so why do we ask our trail camera hosts to avoid them?

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