Tag Archives: wildlife

Acoustic Method Best for Sampling Bats

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State Wildlife Biologists Wanted for Bat SurveyFrom a US Geological Survey press release:

Recording bats’ echolocation “calls” is the most efficient and least intrusive way of identifying different species of bats in a given area, providing insight into some populations that have been decimated by white-nose syndrome.This new research by scientists from Virginia Tech, the U.S. Geological Survey and the U.S. Army is published in the Journal of Ecology and the Natural Environment.

White-nose syndrome, an unprecedented disease of cave hibernating bats caused by a cold-loving fungus, has caused the deaths of more than six million bats. It has spread from central New York to at least 22 states and five Canadian provinces since 2006. In addition to the endangered Indiana bat, populations of the formerly abundant little brown bat and northern long-eared bat have experienced severe disease-related declines, particularly in the Northeast and central Appalachians.

“Acoustic sampling is a noninvasive sampling technique for bats, and its use often allows for the detection of a greater number of bat species in less time than traditional sampling methods such as netting,” said study co-author W. Mark Ford, a USGS scientist at the Virginia Cooperative Fish and Wildlife Research Unit at Virginia Tech. “Low population numbers make netting both time and cost prohibitive. Netting also has low capture rates for WNS affected species. Moreover, acoustic sampling minimizes the handling of bats, which lessens the chance of unintended cross-contamination and exposure to the white-nose fungus from one bat to another or from equipment and personnel to uninfected bats.”

Read the rest of the USGS press release here.
Read the paper (open access;PDF) here.

Photo: An acoustic bat detector in a roof-top car mount. Courtesy New York State Department of Environmental Conservation and the bat survey coalition

NH Moose Study – First Year Report

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NH moose_collaring_Jan2014A total of 43 moose were captured and collared during the first two weeks of a three year moose study in New Hampshire, a New Hampshire Fish and Game press release reports.The study hopes to find the causes of a decline in moose in the state. Biologists took blood samples from the collared moose, as well as hair samples, fecal samples and winter ticks.

For this initial project work, Fish and Game contracted with a specialized helicopter wildlife crew from Aero Tech, Inc., to capture and collar moose for the study, using net-guns and tranquilizer darts, the release goes on to say. Extremely cold temperatures made the work challenging, because it affected some equipment. Another 45 moose will be captured for the study next January.

Find the NH Fish and Game press release here. It includes links to additional information on the moose decline in NH.

Photo: courtesy NH Fish and Game.

 

 

Urban (and Suburban) Deer

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deer technical guideThe Indiana Department of Natural Resources Division of Fish & Wildlife has put together a 32-page online booklet to help municipalities better understand deer and available management options. The impact of white-tailed deer within urban communities is not just a problem in several Indiana communities, but is a growing problem nationwide.

“The Urban Deer guide was developed to support communities that struggle with urban deer conflicts,” said Chad Stewart, DNR’s deer management biologist in a department statement. “Very few topics can be as polarizing as dealing with white-tailed deer in an urban setting. How to resolve these conflicts can cause elected officials many sleepless nights.”

The booklet includes appendices on using sharp-shooters, deer resistant plants, and a solutions matrix.

This link will take you straight to the PDF of the booklet, Urban Deer: Technical Guide.

Construction Netting Harms Swallows

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Nets installed to keep cliff swallows away from a bridge construction zone in Petaluma, California wound up killing dozens of the birds last year, the Press Democrat reports. The construction firm had to pay a $3,525 fine for killing the birds, but now a local conservation organization has won a victory that will force CalTrans and its contractors on the Petaluma bridge project to use hard plastic sheeting instead of netting to keep the birds away during construction.

Read all the details in the Press Democrat, here.

Roadside construction nets, although these were used on the ground to control erosion, also killed wildlife in New York State. We wrote about it here.

Photo: American tree swallows nesting under the bridge over Cayucos Creek, Cayucos, CA. By marlin harms. Used under Creative Commons license.

Construction Netting Harms Swallows

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Nets installed to keep cliff swallows away from a bridge construction zone in Petaluma, California wound up killing dozens of the birds last year, the Press Democrat reports. The construction firm had to pay a $3,525 fine for killing the birds, but now a local conservation organization has won a victory that will force CalTrans and its contractors on the Petaluma bridge project to use hard plastic sheeting instead of netting to keep the birds away during construction.

Read all the details in the Press Democrat, here.

Roadside construction nets, although these were used on the ground to control erosion, also killed wildlife in New York State. We wrote about it here.

Photo: American tree swallows nesting under the bridge over Cayucos Creek, Cayucos, CA. By marlin harms. Used under Creative Commons license.

Worse Year for Monarchs

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Monarch_butterflyDepending on where you live, you may have noticed it in autumn. There were very few monarch butterflies around. It wasn’t unexpected. Numbers were low last winter in Mexico, and the weather over the summer didn’t favor the hatching of new monarchs.

World Wildlife Fund, Mexico’s Environment Department and the Natural Protected Areas Commission just announced that the numbers of monarch butterflies overwintering among the Transvolcanic mountains of central Mexico are the lowest since they started keeping records back in 1993. They measure the butterflies in the number of hectares that they cover in the park. This winter they covered 0.67 hectares. At their recorded high, in the winter of ’95-’96 they covered over 20 hectares.

Why, oh, why, do you ask? At one time the forest where the monarchs roost over the winter was being cut down, but that problem seems to have been solved. Climate change is in the mix. But the big problem, according to MonarchWatch, at the University of Kansas, is that herbicide tolerant (HT) crops have removed milkweed from a part of the country vital to the monarchs’ migration: the Midwest.

Read the report from MonarchWatch, here. It includes all the details on the HT crops theory.
Read the Associated Press news story in SF Gate, here.

Photo: by Mark Musselman, courtesy US Fish and Wildlife Service

Symptoms Show in Arkansas Bats

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WNS in ArkansasAfter detecting the fungus that causes white nose syndrome, but not seeing any bats with the disease, for two winters in a row, dead bats showing the symptoms caused by the white nose syndrome fungus were found in an Arkansas cave on January 11, an Arkansas Game and Fish Commission (AGFC) press release says.

A total of five dead bats were found during a survey of the Marion County cave. Two of the bats were collected and submitted to the U.S. Geological Survey National Wildlife Health Center where it was confirmed that both bats had the fungus. Both bats had damage to wing, ear and tail membranes consistent with white-nose syndrome, the press release says.

This makes Arkansas the 23rd state to confirm white nose syndrome in bats.

Read the AGFC press release on the US Fish and Wildlife Service’s white nose syndrome web page. (The release was not on the AGFC website when this item was posted.)
Press reports have merely reprinted the press release. See an example here.
See State Wildlife Research News‘ coverage of this past summer’s fungus discovery in Arkansas, here.

Map by Cal Butchkoski, PA Game Commission, used courtesy US Fish and Wildlife Service. This year’s findings are in red.

Wiscondsin Adjusts Endangered & Threatened List

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Blandings_TurtleFifteen native birds, plants and other animals have been removed from Wisconsin’s endangered and threatened species list effective Jan. 1, 2014, says a Wisconsin Department of Natural Resources (WDNR) press release. Eight other species, including the black tern, the federally endangered Kirtland’s warbler, and the upland sandpiper, have been added to the list, the release goes on to say, as well as five invertebrates — the beach-dune tiger beetle, ottoe skipper, a leafhopper, an Issid planthopper, and fawnsfoot mussel.

The 15 species removed from the list include seven animals: the greater redhorse, a fish; the barn owl, snowy egret, and Bewick’s wren; the pygmy snaketail, a dragonfly; and two reptiles, the Blanding’s turtle and Butler’s gartersnake.

While Blanding’s turtle no longer meets the scientific criteria for listing, the release says says, the population is vulnerable to harvest and collection. To address this, the DNR has started a new administrative rule process to add the Blanding’s turtle to the Protected Wild Animals List.

Read the WDNR press release here.
A preliminary draft of the economic impact analysis and a draft of the proposed rule order are available for download at the DNR’s proposed permanent rules page or at Wisconsin’s administrative rules page.

Photo: A Blanding’s turtle in Massachusetts, courtesy US Fish and Wildlife Service

Feds Offer Wind Training

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previous wind broadcastHas reviewing wind power project siting proposals become part of your department’s responsibilities? The US Fish and Wildlife Service (USFWS) is holding a training on Weds., Jan. 29. Other broadcasts in the series cover other aspects of wind turbine siting. Here’s the announcement from USFWS:

Register now for the 4th Broadcast of Wind Energy Training Series for Voluntary Land-Based Wind Energy Guidelines:

January 29, 2-4 pm ET

The U.S. Fish and Wildlife Service is hosting a training broadcast series to cover the voluntary Land-based Wind Energy Guidelines (WEG) and other relevant wind energy topics.

The fourth broadcast will air on Wednesday, January 29, 2014, 2:00 to 4:00 pm ET. Host Christy Johnson-Hughes will be joined by Kathy Boydston (Association of Fish and Wildlife Agencies), Charles Newcomb (Distributed Wind Energy Association), and Jennifer Norris (Ohio Department of Natural Resources).  The broadcast will focus on how the WEG apply to distributed wind energy projects; coordination with State agencies; and the identification of “species of habitat fragmentation concern” as defined in the WEG.

E-mail windbroadcast@fws.gov with the subject “register” to register for this broadcast.

View previous broadcasts and related materials.

Photo: Screenshot of previous wind training broadcast, courtesy USFWS. Video is not embedded however. (See “View previous broadcasts…” for link.)

White Nose Syndrome Inches West

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wns in western MOSorry for the double dose of white nose syndrome (WNS) news, but I didn’t want this to get lost in yesterday’s post on the the new WNS protocol, even though it was included in the same Wildlife Health Bulletin. Here’s the announcement:

In December, WNS was confirmed in a tri-colored bat (Perimyotis subflavus) from Jackson County, Missouri, which borders Kansas. This detection represents the western-most location of WNS in North America and is also the first detection of WNS during winter 2013/2014. The nearest confirmed cases of WNS from the previous winter are located in east-central Missouri.

I couldn’t find anything on this case in a newspaper or a general interest publication.
Again, the Wildlife Health Bulletin (PDF)

Map: This year’s first WNS report in red. Map by Cal Butchkoski, PA Game Commission, used courtesy USFWS