Tag: barred owls

March 14, 2022

USFWS can continue barred owl removal, court rules

A U.S. federal appeals court ruled that the U.S. Fish and Wildlife Service can continue lethally removing non-native barred owls from threatened spotted owl ranges. Spotted owls (Strix occidentalis), a...

August 25, 2021

Barred owls are main culprit in northern spotted owl declines

A meta-analysis of northern spotted owl population data shows that a primary reason for their decline has been the invasion of barred owls from the eastern U.S. Compiling data from...

July 30, 2021

Removing barred owls aids northern spotted owl recovery

Throughout the Pacific Northwest, federally threatened northern spotted owls have faced growing competition from invasive barred owls, which have moved into their range. By removing the invaders, researchers found, they...

June 1, 2020

Listening in to help monitor northern spotted owls

By listening to sounds collected from recording devices in the forest, researchers can detect northern spotted owls and invasive barred owls, which can help with monitoring and conservation efforts for...

April 1, 2019

For northern spotted owls, habitat loss still matters

As barred owls (Strix varia) have moved in and taken over threatened northern spotted owl (Strix occidentalis caurina) territory on the West Coast, management has focused mostly on removing barred...

April 5, 2018

Site visit insights: Spotted owl has specific habitat needs

Site visits are critical to helping scientists learn more about species and their habitats.  The trips often take them into areas most people do not have a chance to explore,...

January 22, 2018

Poisons from marijuana farms pose hazard to California owls

The poisons that California marijuana growers use to kill rodents are moving through the food web, recent research found, and may be negatively impacting threatened northern spotted owls (Strix occidentalis...

January 4, 2018

TWS recognizes wildlifers for outstanding publications

Nominations for the Wildlife Publication Awards will be accepted through May 1, 2018. Click on the link above to visit the Wildlife Publication Awards webpage, or visit https://wildlife.org/awards to learn more about...

December 11, 2015

Barred Owls Intensify Northern Spotted Owl Decline

Populations of federally threatened northern spotted owls (Strix occidentalis caurina), a subspecies native to the western United States, continue to dwindle. The reason? Competition with the barred owl (Strix varia)...