Category Archives: animal control

Indiana River Otters: From Recovery to Control

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otter_pair_maxwell“The [Indiana] Department of Natural Resources is considering allowing a trapping season for river otters less than two decades after being reintroduced to the Hoosier landscape,” wrote John Martino, outdoors columnist for the Kokomo Tribune last week. In the article, Martino says the river otters were official declared extirpated from Indiana in 1942.

The state’s reintroduction program began in 1995 and included 303 river otters trapped in Louisiana and released in Indiana, the article says. Ten years later river otters were taken off the state endangered species list.

In 2013 the IDNR received more than 64 formal complaints about river otters eating fish from private ponds, Martino reports. The department issued 11 nuisance animal control permits in 2012, he adds. Now, he reports, the department is considering controlling the river otter population by opening a trapping season for river otter in the counties where it is most abundant.

Read the article in the Kokomo Tribune here.
Information on river otter from the Indiana Department of Natural Resources is here. It includes links to several data sets, including a mortality study.

Photo: courtesy Indiana Department of Natural Resources

Updated Prohibited Species List in Oregon

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Some reptiles and amphibians are off, and two otter species are on. The Associated Press reported this week that the Oregon Wildlife Integrity Program has updated its list of prohibited species in a three-year long process. The Wildlife Integrity Program is part of the Oregon Department of Fish and Wildlife. In some states prohibited species are handled by the department of agriculture or the department of commerce.

The reptiles and amphibians taken off the list are not considered a risk of competing or surviving in Oregon if they escape. Three other amphibian species were kept on the list because they do pose a risk.

The two otters prohibited are the eastern subspecies of North American river otter, and the Asian small-clawed otter.

Read the Associated Press article in the Seattle Post-Intelligencer for the specific species.

More Feral Hog News

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feral swine pigletIf you just can’t get enough feral hog news, eXtension, a network of university extension services has a resource for you: the Feral Hog Community of Practice Facebook page. This page not only has what has to be every single newspaper article published on feral hogs from across the country, also has expert tracking or trapping tips, and the occasional link to webinars and podcasts.

Visit the Feral Hog Community of Practice Facebook page here.

Photo:  A feral swine piglet. By Steve Hillebrand, courtesy US Fish and Wildlife Service

Miss. Dept. Wildlife: Alligators Not Property, Not Nuisance

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alligatorThe Mississippi Department of Wildlife, Fisheries and Parks says that alligators are under its authority, and a Wilkinson County couple should not be able to sue ExxonMobil over the alligators on the oil company’s property because wildlife is not private property, and managing wildlife is the department’s domain, an Associated Press article says. Furthermore, the article says, the department said that, “wild alligators living in their natural habitat do not constitute a nuisance that should be abated.”

The Mississippi couple had filed suit when they found out that the alligators that were coming on to their property were traveling there from the ExxonMobil refinery waste disposal site next door. (Seriously, they bought property next to a refinery waste disposal site and they are worried about… alligators?)

Read the entire AP story in the Columbus Indiana Republic, here.

Photo: courtesy US Fish and Wildlife Service

Troublesome Creatures

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spotted owlEfforts around the country to remove troublesome creatures — whether invasive or otherwise — have been met with a variety of reactions. In all cases the creatures are being removed because they are harming an ecosystem.

No one seems to mind that California Fish and Wildlife Department is removing South African clawed frogs from Golden Gate Park. The frogs are not native to the area, they completely destroy the habitats they invade, and they carry a fungus that is deadly to native amphibians. Read about the recovery effort in Bay Nature.

In Michigan, the Department of Natural Resources would like there to be fewer invasive mute swans. Mute swans are aggressive and don’t allow the native trumpeter swans or loons to nest. (They also have it in for ducks and geese.) Plus, they eat so many wetland plants that they can destroy wetlands. Oiling eggs has been too costly and too slow, so the department will begin to kill mute swans. Michigan Live has published several articles on the subject.
Here’s Michigan Live on why.
Here’s the plan in one county.
And here the reaction to the plan in that county.

And then there are barred owls. They’ve long been identified as a threat to northern spotted owl recovery in the Pacific Northwest. Spotted owls rely on old-growth forests. Barred owls are not so picky, and have moved into the spotted owls’ turf as the habitat has become more variable, because the old-growth forests were cut. The U.S. Fish and Wildlife Service has decided to start killing barred owls to try to improve matters for the spotted owl. The Oregonian did two stories on the situation. This one several years ago. And this one now that the program has begun.
There’s been no shortage of news coverage. See a lot of it here.

Photo: Spotted owl, courtesy US Fish and Wildlife Service

Controlling Invasive Bullfrogs

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bullfrogIn the Pacific Northwest, it is not unusual to try to kill off invasive bullfrogs by drawing down managed wetlands in imitation of ephemeral wetlands, a paper in The Journal of Wildlife Management says. Because the bullfrogs over-winter as tadpoles, the idea is to remove that over-wintering habitat.

However, the paper notes, in Oregon’s Willamette Valley, bullfrogs were observed metamorphosing after just four months. Some frogs can speed up their metamorphosis in response to a wetland that is drying out, can bullfrogs do this as well? If they could, this would be bad news for the invasive species control technique.

The study took bullfrog tadpoles from both ephemeral and permanent wetlands and subjected them to various regimes of water and lack of water. The study found that the bullfrog tadpoles did not speed up their metamorphosis in response to drying wetlands, but they did show a lot of variety in how long they took to mature.

The paper concluded that drawing down managed wetlands won’t cause bullfrog tadpoles to metamorphose faster, but that some bullfrogs may survive the draw-down because of the natural variability in the amount of time it takes them to become frogs.

Find the Journal of Wildlife Management article here. Reading it requires a fee or a subscription.

Raptor-Killing Poison Ban Starts Soon in Canada

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Bald_EaglePotent second generation anticoagulant rodenticides (ARs; aka, rat poisons) kill birds, particularly raptors in the United States and Canada. Canada will ban sales of these poisons on January 1, while in the U.S. talk of banning consumers from using the poisons has been around for a while, but never seems to be enacted.

“In a study of more than 130 dead birds of prey found in and around Vancouver, Canada, ‘virtually 100%’ of the owls and a large proportion of the hawks had residues of at least one second-generation AR in their livers,” said a news story in the journal Nature last month.

The Canadian Cooperative Wildlife Health Centre blog illustrates just how tough it can be to diagnose AR poisoning in raptors. A toxics screen of the bird’s liver may be the only sign that AR poisoning was the cause of death, the blog says.

Read the Nature article, here.
Read the CCWHC blog post, here.

We’ve covered this subject before. Read one of our previous posts, here.

Photo: bald eagle by Dave Menke, USFWS

Midwest Otter Recovery

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otter_pair_maxwellRiver otters now occupy more than 80 percent of Indiana counties, says Scott Johnson, nongame biologist with the Indiana Department of Natural Resources in a department press release.

That is remarkable, because in 1942 river otters had been extirpated from the state. A restoration program began in 1995, 303 otters were transported from Louisiana and released at 12 sites in northern and southern Indiana.The otters thrived and in 2005 they were removed from the state’s endangered species list.

More recently, otters have moved into central Indiana, finding habitat in an area that was long thought not to be ideal, says Johnson.

In what is perhaps the modern sign of wildlife restoration success, the otters are now considered a nuisance to some Indiana pond owners. The IDNR received 34 river otter complaints last year and issued 10 control permits in 2012.

Read the IDNR press release, here.

In Illinois, river otter restoration may be considered even more successful. Last week, National Public Radio reported that Illinois had reinstated an otter trapping season for the first time in 90 years. The story’s headline says that the state has been overrun by otters.

Read or listen to the NPR story, here.

Photo: River otters, courtesy Indiana Department of Natural Resources

Midwest Otter Recovery

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otter_pair_maxwellRiver otters now occupy more than 80 percent of Indiana counties, says Scott Johnson, nongame biologist with the Indiana Department of Natural Resources in a department press release.

That is remarkable, because in 1942 river otters had been extirpated from the state. A restoration program began in 1995, 303 otters were transported from Louisiana and released at 12 sites in northern and southern Indiana.The otters thrived and in 2005 they were removed from the state’s endangered species list.

More recently, otters have moved into central Indiana, finding habitat in an area that was long thought not to be ideal, says Johnson.

In what is perhaps the modern sign of wildlife restoration success, the otters are now considered a nuisance to some Indiana pond owners. The IDNR received 34 river otter complaints last year and issued 10 control permits in 2012.

Read the IDNR press release, here.

In Illinois, river otter restoration may be considered even more successful. Last week, National Public Radio reported that Illinois had reinstated an otter trapping season for the first time in 90 years. The story’s headline says that the state has been overrun by otters.

Read or listen to the NPR story, here.

Photo: River otters, courtesy Indiana Department of Natural Resources

Alaska says: Please don’t taze the bears

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The State of Alaska has made it illegal for the public to use a Taser on wildlife. The stated fear is “catch and release” hunting — that someone would stun a moose or a bear long enough for a photo op, then release the animal, an article in the Fairbanks Daily News-Miner reports.

The Taser X3W

You might think that the inevitable injury to the “hunter” would nip this practice faster than any law would, but with yet another Jackass movie coming out in a few months, what more proof do you need that some people never learn?

The Alaska law seems wiser with the knowledge that Taser International recently introduced the Taser X3W Wildlife Electronic Control Device, a stun gun specifically designed for wildlife management. (The company’s press release for the product is here.)

It can, and has been, used to haze bears, but it can also be used in place of tranquilizer darts under certain conditions. One suggested use is to stun an animal so that a tranquilizer can be injected more accurately. Another use is to stun the animal briefly (15 seconds is one time I saw), for quick actions like taking a chicken feeder off a moose’s head. (As mentioned in the newspaper article.)

The magazine Wildlife Professional has a review of the use of stun guns on wildlife in its current issue. You can read it here. That article contains a link to the Alaska Department of Fish and Game’s operating procedures for stun guns.

Photo: TASER International