Sentences with phrase «barred owl»

A white barred owl sat in my street the other night as I pulled into the driveway and I realized she'd probably been displaced by all the tree removal behind my back 40.

Spotted owl populations and survival rates have increased on the latter area since the removal of barred owls started.

The exception was a small area in California where barred owl removals began in 2009, and where long - term population declines were only 9 percent.

Since spotted owls are endangered, Higley and Gabriel use barred owls as a surrogate — their dietary habits are similar — and infer that up to half of spotted owls near grow sites might be exposed to rodenticide.

For decades, barred owls from Eastern states have been invading the breeding territory of the northern spotted owl in California, Oregon and Washington.

Already on the ropes from the logging of old - growth woods, spotted owls were disappearing, and so biologists tried a desperate measure: shooting barred owls.

Researchers found evidence that the invasive barred owl is playing a pivotal role in the continued decline of spotted owls, although habitat loss and climate variation were also important in some parts of the species range.

Barred owls compete with spotted owls for space, food and habitat.

Researchers now have the genetic tools to perform a variety of analyses, and hopefully understand whether interbreeding between barred owls might directly threaten the extinction of northern spotted owls.

With the more aggressive Barred Owl already displacing this vulnerable species, climate might accelerate this decline even more.

The White House now contends, however, that the Clinton - era plan has failed to stave off the population decline, despite the protections in place, because barred owls have been invading the spotted owl's territory.

In science news around the world, the European Commission proposes that the European Union consider funding military research, more investigations at Japanese universities cast doubts on claims for a leading hypertension drug, U.S. Fish and Wildlife Service officials plan a culling of barred owls in the Pacific Northwest in hopes of saving the endangered northern spotted owl, and more.

At the Hoopa Valley Indian Reservation in Humboldt County, forestry biologist Mark Higley, who has helped with the fisher project, also takes part in the culling of barred owls.

Same twisted reasoning that opposes killing the barred owls that are harming the endangered spotted owls or the sea lions that are decimating threatened salmon species.

I love listening to the Barred owls calling every evening.

A barred owl along the walking trails of Kinns Road Park, Clifton Park.

The evidence here is less direct, and depends on analyses of a competing species, the barred owl.

After Gabriel's breakthrough with AR and fishers, Higley sent him liver samples of more than 155 barred owls that had been collected at Hoopa.

But more recently, an eastern species called the barred owl has been expanding westward into spotted owl territory, outcompeting the native owls where their ranges overlap.

The presence of barred owls was associated with decreasing spotted owl survival rates in some study areas and spotted owls were disappearing from many of their historical breeding territories as those areas were invaded by barred owls.»

However, further research on barred owl removal is required in other parts of the spotted owl's range — especially in Washington, where barred owl numbers have been high for a long time.

Dr. Katie Dugger, a research biologist at the USGS Oregon Cooperative Fish and Wildlife Research Unit, Oregon State University and lead author on the report, said that «This study provides strong evidence that barred owls are negatively affecting spotted owl populations.

«We wanted to know how the barred owl's range expansion will play out evolutionarily,» Zachary Hanna says, lead author and Academy - affiliated student who is currently a PhD candidate at UC Berkeley in the Museum of Vertebrate Zoology.

The barred owl is the scrappier of the two, enjoying a more varied diet and producing more young, more often — ultimately emerging as the super competitor.

In addition to Sequoia, the team also sequenced a barred owl individual from the eastern United States as a baseline of comparison for better evaluating the frequency of interbreeding and tracking hybrid offspring in the wild.

Notable for its larger size and more aggressive behavior, barred owls have vertical dark markings against a white belly and a hooting call birders mimic with the words, «Who cooks for you?»

Barred owls were first recorded in Marin County in 2003.

Over the past half - century, the barred owl (Strix varia)-- a close relative formerly found east of the Rocky Mountains — has flown onto the scene.

Genetic identification of spotted owls, barred owls, and their hybrids: legal implications of hybrid identity

Here, you may spot trumpeter swans, osprey, mink, white - tailed deer, barred owls and a variety of waterfowl and songbirds.

Dr. Burkart assesses a Barred Owl's injuries as it rests on her gloved arm.

Like Hadidian, Lynn pointed to some examples from which both sides in the current debate might learn valuable lessons: the Ethical, Legal and Social Implications (ELSI) Research Program associated with the Human Genome project, for example, and the Barred Owl Working Group, in which Lynn participated (PDF of BOWG charter).

A spotted owl will freely mate with a barred owl, while most amazon parrots freely cross breed.

Find out how the barred owl emerged as a potent new threat in our own back yard.

Given the difficult light environment of Muir Woods and the bird's camouflage, this photo of a barred owl (an invasive species at «war» with the northern spotted owl) was not easy to capture By Alison Taggart - Barone

Snowy owl pellets have been documented to contain parts of herring gulls, double - crested cormorants, great blue herons, peregrine falcons, barred owls, mink and house cat... they are badasses who can deal with some of the toughest predators out there.

Gabriel has only spotted a barred owl three times at Wave Hill in the 14 years he's been leading our birding walks, so it was a special treat for all!

Drawn to the Conifer Slope by sound of blue jays, the group experienced the rare sighting of a barred owl, native to eastern North America, in one of the conifers.

Of course, the bird count at Wave Hill was just part of the more widespread count throughout the Bronx, whose coordinator, Michael Bochnik, told us that highlights among the more than 100 species observed in the borough were a snowy owl, great egret, laughing gull, barred owl, saw - whet owl, Nashville warbler and two orange - crowned warblers.