All articles tagged with #barred owls
A new study analyzing 1,003 Barred Owls in northwestern California confirms that state bans on second-generation anticoagulant rodenticides have significantly reduced exposure in wildlife. However, the research also reveals a rising presence of vitamin D3 rodenticides, suggesting product substitution as older compounds become restricted.
A California GPS-tracking study shows invasive barred owls overwhelmingly occupy tall, old-growth stands that spotted owls depend on, with 64% overlap in home ranges and 38% in high-quality nesting habitat. Ongoing management that removed 1,171 barred owls freed more than 1,800 square kilometers of habitat (including about 1,150 km2 of prime nesting/roosting forest) for spotted owl recolonization, underscoring the need for sustained barred-owl control to protect the old-growth ecosystem.