Vocal territory defense can vary within a species due to many factors such as sex and
breeding status, influencing territory size and thus population density across a landscape …

Emerging bioacoustic technology allows researchers to passively record animal
vocalizations to study population dynamics at relatively broad spatial scales. Spatiotemporal …

Owls play important cultural, ecological, and indicator roles throughout the world. Yet owls'
cryptic behavior has led to uncertainties about their basic ecology, including foraging …

Many animals have vocalizations that are individually distinguishable. Researchers can use
these differences to facilitate monitoring of individuals. To be an effective monitoring tool …

ABSTRACT Northern Spotted Owls (Strix occidentalis caurina) are of management and
conservation concern in the US Pacific Northwest where populations have been monitored …

Owls can be difficult to detect due to their secretive behavior, typically low calling rate, and
low density on the landscape. Low detection probability during surveys can result in an …

Noise in natural environments can mask important acoustic signals used for animal
communication. Owls use vocal communication to attract mates and defend territories, and …

Managing forests for biodiversity conservation while maintaining economic output is a major
challenge globally and requires accurate and timely monitoring of imperiled species. In the …

Abstract Barred Owls (Strix varia) have recently expanded westward from eastern North
America, contributing to substantial declines in Northern Spotted Owls (Strix occidentalis …

2009). Although generally secretive, owls are readily detectable by listening for their songs
or calls during the breeding season; either spontaneously or in response to broadcast …