As regular CFZ-watchers will know, for some time Corinna has been doing a column for Animals & Men and a regular segment on On The Track... particularly about out-of-place birds and rare vagrants. There seem to be more and more bird stories from all over the world hitting the news these days so, to make room for them all - and to give them all equal and worthy coverage - she has set up this new blog to cover all things feathery and Fortean.
Showing posts with label sage-grouse. Show all posts
Showing posts with label sage-grouse. Show all posts

Wednesday, 28 August 2019

Saving sage-grouse by relocation


Date: August 26, 2019
Source: Washington State University

Moving can be tough, but eventually most of us acclimate to new surroundings.

That's true for humans, and research from Washington State University shows it's the same for sage-grouse too.

A team of scientists successfully moved sage-grouse, a threatened bird species in Washington state, from one area of their range to another to increase their numbers and diversify their gene pool. A WSU study on the project in The Journal of Wildlife Management shows relocating the birds is a viable and productive step towards helping their population recover in the state.

"In the first year after moving sage-grouse in, they tended to move around a lot and didn't reproduce as effectively as the native population," said Kyle Ebenhoch, a researcher now working at the U.S. Geological Survey (USGS). "It took them about a year to settle in and get used to their new surroundings."

Ebenhoch, a WSU graduate student during this project, wrote the paper with WSU School of the Environment professors Daniel Thornton, Lisa Shipley, and Jeffrey Manning. Kevin White, a contract wildlife biologist with the Yakima Training Center at Joint Base Lewis-McChord, was also a member of the research team. The training center hosts a population of sage-grouse where the relocation work was done.

An adjustment period

Ebenhoch wanted to investigate how newly introduced sage-grouse would survive and reproduce in order to determine if relocating birds to the area could be a workable way of keeping the species from further decline in Washington.

It turns out, the birds can adjust, though the training center population continued to decline.

"The birds did adjust to their new surroundings, but it didn't stabilize the population," Ebenhoch said. "This can be one tool in our toolbox for helping, but we'll need more research to find other tools as well."


Wednesday, 14 August 2019

Global tracking devices negatively affect the survival rate of sage-grouses

AUGUST 13, 2019


A new study in The Condor: Ornithological Applications finds that currently-available global positioning system (GPS) tracking devices, previously thought to not alter animal survival rates, can decrease greater sage-grouse survival.

The researchers monitored sage-grouse survival at 14 sites throughout California and Nevada. Between 2012 and 2017, VHF transmitters were attached to 821 female and 52 male sage-grouse. GPS devices were attached to 234 female and 125 male sage-grouse.

Researchers here combined the measured survival of the tracked sage-grouse throughout the duration of the study with models to estimate independent random effects and correlating fatalities, to determine differences in the survival rate for sage-grouse fitted with GPS devices versus those fitted with VHF transmitters.

Sunday, 20 May 2018

The Trump Administration Is Being Sued Over a Very Weird Bird



Oil and gas companies are destroying sage-grouse habitat—with Ryan Zinke’s blessing.

JACKIE FLYNN MOGENSENMAY. 2, 2018 6:00 AM

Environmental groups have filed two lawsuits against US Secretary of the Interior Ryan Zinke for approving oil and gas leases on habitat that is home to the greater sage-grouse, an imperiled bird species native to the American West.

Both lawsuits urge the courts to reverse the recent oil and gas land sales, claiming that the Trump administration is ignoring Obama-era conservation plans intended to protect the greater sage-grouse from development, and therefore breaking the law.

“This is politically-driven—it comes from Trump’s ‘America-first’ agenda,” says Laird Lucas, lead counsel on one of the lawsuits and executive director of legal firm Advocates for the West. “The oil and gas industry basically gave Zinke and the Interior Department their wish list of what would happen, and the department is following that.”



Tuesday, 22 September 2015

California sage-grouse remain genetically diverse, for now


Date:September 16, 2015

Source:Central Ornithology Publication Office

Summary:Genetic diversity is essential for a species to be able to adapt to environmental change, and when a population is divided into small, isolated fragments, that can spell trouble. To determine whether the genetic diversity of Northern California's fringe population of sage-grouse is suffering as a result of habitat loss, researchers spent three years collecting blood samples from birds on their breeding grounds.