River otters have returned

Sightings of otters are rare

Otter tracks are easily confused with raccoon tracks.



River otters were spotted recently along the bank of a pond in Loma. In November, signs of otters in the form of scat and tail marks on the bank of the Gunnison River in the Grand Junction Wildlife Area. It’s not easy to spot river otters because they’re nocturnal, but they tend to get out during the day in the winter.



Otter scat is usually full of crayfish shells or fish parts. The scat is often placed prominently on banks or racks as a way to mark territory.



QUICKREAD

Rare sightings

Although otters are present throughout the Grand Valley, consider yourself lucky if you get a good look at one.

River otters are primarily nocturnal, though they also are active at dawn and dusk. In the winter, otters may be out and about more during the day.

Folks who spend time on the river in the mornings and evenings, such as fisherman and waterfowl hunters, are most likely to see them. If you spot an otter, take a picture if possible and consider filling out the online river-otter-sighting form at cpw.state.co.us/learn/Pages/RiverOtterObservationForm.aspx.



In November my family and I were taking advantage of the mild weather and exploring the Grand Junction Wildlife Area. We were wading down the shallow muddy edge of the Gunnison River just upstream of the confluence.

The kids were hunting for crayfish burrows when I noticed a telltale slide mark on the sandy bank, as if a small child had slid down it on their bottom. Because I am nosy, I poked my head up through the tamarisk at the top of the bank and found a pile of scat, prominently placed in the sand and full of crayfish shells — definite signs of a river otter.

I learned to identify otter scat and tracks when I volunteered to help Colorado Parks and Wildlife with a river otter survey on the Yampa River this past summer.

We saw a lot of otter signs as we followed the Yampa through Dinosaur National Monument, which seemed fitting as we were in wild country. But the otter sign I found on the Gunnison was only about 100 yards from U.S. Highway 50, behind a furniture store.

Forty years ago there were no otters in the Grand Valley, or anywhere else in the state of Colorado. Historically otters had been present in every major river drainage in the state, but their luxurious pelts were even more valuable than those of beaver, and otter populations were greatly reduced by the fur trade in the 1800s.

Overtrapping, followed by habitat loss and water pollution, caused the extirpation of the otter in our state.

The last otter was trapped in Colorado in 1906 or 1909 (historical records vary).

But in 1976, Colorado became the first state in the nation to attempt reintroduction of the river otter.

Between 1976 and 1991, more than 100 river otters, obtained from states with healthy populations, were released in the state, and an intensive monitoring program began.

Colorado Parks and Wildlife (the Division of Wildlife at that time) outlined criteria that must be met in order for river-otter populations to be considered healthy, established and “recovered” in the state.

The otter monitoring conducted as part of this recovery plan concluded in the summer of 2014, with populations meeting the initial criteria to be considered recovered.

In our area, otter signs (scat or tracks) were found along every 5-kilometer stretch of the Colorado River from De Beque to the Utah state line, according to Dan Neubaum, a wildlife biologist with Colorado Parks and Wildlife.

Parks and Wildlife staff members aren’t the only people involved with the monitoring effort.

“Public effort to submit sightings has contributed greatly to our knowledge as to where otters are in the Grand Valley, especially now that many people carry phones with cameras, enabling them to take photos and confirm their sightings,” Neubaum said.

In Colorado, we love our rivers not only for the water they provide, but for fishing, rafting, hunting and other activities.

The return of the playful river otter, a fellow fisherman and recreationist, is a welcome sign that we are doing a better job than we have in the past of caring for our wildlife and water resources.

Keep an eye out for otters, or at least their tracks and scat. It is great to have them back.

Editor’s note: Meredith Swett Walker is a science and nature writer from Fruita. She has a Ph.D in biology from Montana State University and blogs at Pica Hudsonia.


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