New Era in Ferret Reintroductions

black-footed ferret closeup

High Country News’s Goat blog says that things are looking up for black-footed ferret reintroductions. It says that safe harbor agreements and new approval from the Colorado state legislature have opened new vistas for the species, which was once widespread across the West and then, in 1979, was thought to be extinct.

If you don’t know the black-footed ferrets’ saga already, the Goat blog has a nice summary, plus all the reasons why having new places to inhabit in Colorado is a good thing. The reintroductions began in late October.

Read the High Country News Goat blog entry, here.

ferret release

Photos: Ferret close up and transport to reintro site, courtesy U.S. Fish and Wildlife Service Mountain-Prairie Region.

Energy Development Drives Pronghorn Study

A pronghorn is released in western ColoradoWildlife researchers with the University of Wyoming (UW), the Wyoming Game and Fish Department (WGFD), and the Bureau of Land Management (BLM) are cooperating on a project to study pronghorn antelope in southwestern Wyoming, a WGFD press release says.

According to biologists, the release says, pronghorn in the region are under increasing pressure from human presence and have seen declines in numbers and the ability to recover from hard winters over the past 20 years, primarily because fawn production is very low. The study, however, is driven by energy production in the region. The press release says that the study will, “provide credible information to industry, the WGFD, and land management agencies, such as the BLM, that are involved in permitting energy development in south-central Wyoming.”

The release details the study’s methodology:

“Each pronghorn was aged, weighed, their blood tested for pregnancy and disease, and their body fat measured,” said Wildlife Biologist Tony Mong.” Fecal samples were collected to determine pronghorn stress levels and each animal was fitted with a collar. The proposal for this three-year study specifies that thirty-five animals in each study area will be fitted with GPS collars, which will record locations across three years. Twenty-five additional animals in each study area will be fitted with VHF collars to bolster the sample for survival estimation. The pronghorn will be monitored from the air on a bimonthly basis. All the collars will be retrieved once an animal dies or after the collars are automatically released in August 2015.”

Read the WGFD press release here.

Photo: Pronghorn in a Colorado study. Courtesy Colorado Division of Wildlife. I apologize for the repeat of photos in the last few weeks. There’s just been a lot of news on pronghorns and golden eagles and not a lot of photos of them in my files.

Energy Development Drives Pronghorn Study

A pronghorn is released in western ColoradoWildlife researchers with the University of Wyoming (UW), the Wyoming Game and Fish Department (WGFD), and the Bureau of Land Management (BLM) are cooperating on a project to study pronghorn antelope in southwestern Wyoming, a WGFD press release says.

According to biologists, the release says, pronghorn in the region are under increasing pressure from human presence and have seen declines in numbers and the ability to recover from hard winters over the past 20 years, primarily because fawn production is very low. The study, however, is driven by energy production in the region. The press release says that the study will, “provide credible information to industry, the WGFD, and land management agencies, such as the BLM, that are involved in permitting energy development in south-central Wyoming.”

The release details the study’s methodology:

“Each pronghorn was aged, weighed, their blood tested for pregnancy and disease, and their body fat measured,” said Wildlife Biologist Tony Mong.” Fecal samples were collected to determine pronghorn stress levels and each animal was fitted with a collar. The proposal for this three-year study specifies that thirty-five animals in each study area will be fitted with GPS collars, which will record locations across three years. Twenty-five additional animals in each study area will be fitted with VHF collars to bolster the sample for survival estimation. The pronghorn will be monitored from the air on a bimonthly basis. All the collars will be retrieved once an animal dies or after the collars are automatically released in August 2015.”

Read the WGFD press release here.

Photo: Pronghorn in a Colorado study. Courtesy Colorado Division of Wildlife. I apologize for the repeat of photos in the last few weeks. There’s just been a lot of news on pronghorns and golden eagles and not a lot of photos of them in my files.

Fine Levied in Eagle Wind Power Deaths

golden eagle usfwsLong before bats had a problem with wind turbines, raptors had a problem with wind turbines. The problem seemed particularly bad in Altamont, California, which was one of the nation’s first utility-scale wind power operations. The lessons learned there were supposed to prevent similar problems happening elsewhere.

It didn’t. Last week Duke Energy plead guilty to killing eagles and other birds at its Wyoming wind farm. The fine of $1 million was the very first levied against a wind power company, The Christian Science Monitor reports. The Monitor story also says that the case was the first prosecuted against a wind company under the Migratory Bird Act. It also says that the US Fish and Wildlife Service has 18 more cases in the works. Six of those have been referred to the Justice Department.

Read the entire story in The Christian Science Monitor.
Find more stories on the case, here.

Photo: Golden eagle by Donna Dewhurst, from USFWS

Infection and Capture Fatalities

It happens. An animal is captured for study, is released, but dies soon after. A certain percentage of fatalities is expected in any study where animals are handled. In Chile recently, five fur seal pups died after being captured, AAAS’s ScienceShot reports. There had been no previous fatalities in the four years of the study.

Veterinarians studying the dead pups found they all had a hookworm infection. The infection sent the seals’ adrenal glands into over-drive, stressing their hearts. The researchers say that fieldworkers should not try to capture seals that show signs of chronic infection, which is probably good advice when working with other animals as well.

Read the ScienceShot article here. It includes links to the paper and other information.

 

Elk Killed by Blue-Green Algae

More Cervid Contraception: GonaCon and ElkOutbreaks of blue-green algae are a growing plague across the country. Pollution plays a role, by providing nutrients (the pollution is typically fertilizer, but also detergents containing phosphates) that allow the algae (which isn’t really algae, but a photosynthetic bacteria — read more here) to grow to unnatural levels.

The toxins in blue-green algae can kill animals such as dogs or cattle that drink the water. Children are at higher risk from blue-green algae toxins than adults for the same reason; they are more likely to drink water while swimming. Hot weather and still lakes or ponds make things worse, leading some states to produce regular reports on where blue-green algae is found.

A mysterious die-off of 100 elk in New Mexico appears to have been caused by blue-green algae, an article in the Southwest Farm Press reports. Biologists from the New Mexico Department of Game & Fish considered many common causes of elk death, including epizootic hemorrhagic disease, anthrax and lightning.

A search of nearby water sources found blue-green algae in fiberglass water tanks in the area where the elk died, but not in ceramic water tanks in the same area. Just another possibility to consider when you are faced with an unexplained wildlife die-off.

Read the entire article in the Southwest Farm Press.

Photo: Photo: A healthy bull elk. Credit: Gary Zahm, courtesy of US Fish and Wildlife Service

Golden Eagles’ Slow Decline at Migration Site

golden eagle usfwsThe Montana Audubon Society reports that the number of golden eagles migrating along Montana’s Bridger Mountains has declined 35 to 40 percent over the last 20 years, according to an article in the Great Falls Tribune.

According to the US Fish and Wildlife Service, golden eagle numbers in the West are stable, the article says. But the persistent decline in numbers of golden eagles counted each year during a raptor migration watch has the state Audubon group concerned.

The raptor count started in 1992, when 1,579 golden eagles were counted. This year the number was 1,131. While the general trend has been a decline, the numbers did spike in 1999 when 1,870 golden eagles were spotted. The survey takes into account bad weather and resident birds.

Read more about the golden eagle situation at the Bridger Mountains in the Great Falls Tribune, here.

Photo: Golden eagle by Donna Dewhurst, courtesy US Fish and Wildlife Service

Lobbyist-fueled Lizard Monitoring in Texas

dunes sagebrush lizard“Comptroller Susan Combs’ office, of course, knows doodly squat about lizards,” says a Houston Chronicle editorial on the dunes sagebrush lizard, federally listed as a threatened species. The problem is that the Texas state comptroller’s office is in charge of monitoring the lizard population to make sure the stipulations of a free-market habitat conservation plan are being obeyed.

State law forbids the US Fish and Wildlife Service from so much as reviewing the state contractor’s paperwork, an August article in the Chronicle reported. Even stranger, the editorial reports, the comptroller’s office keeps the identities of the landowners participating in the habitat enhancement program a secret.

And of course, because this is Texas, the editorial mentions that independent oil producers are worried that the lobbyist group monitoring the lizards will favor large producers over the independents.

Read the whole editorial in the Houston Chronicle, here.
Read the news article about the lizard monitoring, in the Chronicle’s oil industry news section, here.

Photo: Dunes sagebrush lizard, courtesy USFWS

Third Time’s the Charm for Wildlife Passages

A pronghorn is released in western ColoradoAt Trapper’s Point in Wyoming, migrating pronghorns and mule deer are funneled by two rivers to 13-mile stretch of Highway 191, where they attempt to cross. Each year they endanger their own lives crossing the highway, and human lives as well, High Country News’s Goat blog reports.

Last year the Wyoming Department of Transportation (WYDOT) opened eight wildlife crossings, including both under- and overpasses at the site. The deer and pronghorns were guided toward the passages with fencing.

The effort worked — the deer and pronghorn eventually used the passages, but not without a lot of searching, looking and just plain standing around, first. Worse still, during the spring migration, the pronghorn and deer repeated the process. The passages still made them nervous.

But the third time is the charm, according to the excellent Goat blog post and a press release from the Wildlife Conservation Society. When encountering the passages for the second time on their fall migration, the animals didn’t hesitate, but proceeded right through.

Read High Country News’s Goat blog, here.
Read the Wildlife Conservation Society press release, here.

Photo: A pronghorn being released after being collared in Colorado. Courtesy Colorado Division of Wildlife

Zombies vs. Wildlife

Can I be Boing Boing when I grow up? Last week it ran a post by National Wildlife Federation naturalist David Mizejewski on how wildlife would save us if there were ever a zombie attack and if whatever caused zombification only affected humans.

“If there was ever a zombie uprising, wildlife would kick its ass,” Mizejewski says in the piece.

What follows is an overview of wildlife’s role in cleaning up the undead, from carrion eating birds, to carnivores that will go for anything slow-moving, to detritivores like maggots and beetles. It’s got lots of videos, so this is not lunchtime reading.

Our cultural zombie moment is peaking now, so enjoy. But when zombies finally jump the shark, remember, you heard it here first. (Well, second.)

“Zombies vs. animals” in Boing Boing, here.