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Keyword: behavior

Foraging ecology of Nuttall's Woodpecker

Publications Posted on: August 01, 2018
I studied relative abundances, foraging behavior, and foraging habitats of Nuttall's Woodpeckers (Picoides nuttallii# at three California locations. Population sizes at two areas in the foothills of the Sierra Nevada were larger than the population in the Tehachapi Mountains. These differences were attributed to habitat and weather differences.

Emerging technology to measure habitat quality and behavior of grouse: Examples from studies of greater sage-grouse

Publications Posted on: August 29, 2017
An increasing number of threats, both natural (e.g. fires, drought) and anthropogenic (e.g. agriculture, infrastructure development), are likely to affect both availability and quality of plants that grouse rely on for cover and food. As such, there is an increasing need to monitor plants and their use by grouse over space and time to better predict how changes in habitat quality influence the behavior of grouse.

Human values and codes of behavior: Changes in Oregon's Eagle Cap Wilderness visitors and their attitudes

Publications Posted on: April 30, 2015
A study of visitors to Oregon's Eagle Cap Wilderness in 1965 offered a baseline against which to evaluate how those who recreate in wilderness have changed their views of wilderness. A study of visitors to that same wilderness area in 1993 provided comparative data.

Lewis's Woodpecker: Melanerpes lewis

Publications Posted on: September 19, 2013
During the historic Lewis and Clark expedition, Meriwether Lewis wrote on 20 July 1805, "I saw a black woodpecker (or crow) today it is a distinct species of woodpecker; it has a long tail and flys a good deal like the jay bird" (sic, Thwaites 1905). Subsequent observations of flight and vocalization reminded him of the Red-headed Woodpecker (Melanerpes erythrocephalus) he knew from his home in Virginia.

Abert's Towhee: Pipilo aberti

Publications Posted on: July 23, 2010
Abert's Towhee inhabits dense brush and woodlands along Sonoran Desert rivers and streams in Arizona and surrounding states. Spencer Baird described this species in 1852 (Am. Ornithol. Union 1983) and named it for Lt. James William Abert, U.S. Army (1820-1897), who obtained the specimen as a result of a survey of New Mexico at the end of the Mexican War.

Recommendations for improved assessment of noise impacts on wildlife

Publications Posted on: September 21, 2009
Research to determine noise impacts on animals benefits from methodology that adequately describes the acoustical stimulus as well as the resulting biological responses. We present acoustical considerations and research techniques that we have found to be useful.

The effects of matrix structure on movement decisions of meadow voles (Microtus pennsylvanicus)

Publications Posted on: April 03, 2009
The composition of the landscape between patches (the matrix) can have important effects on movement rates that potentially outweigh the effects of patch size and isolation. We conducted a small-scale experiment with radiocollared meadow voles (Microtus pennsylvanicus) to quantify the effects of matrix habitat on movement behavior of voles.

Sundance Fire: an analysis of fire phenomena

Publications Posted on: March 31, 2009
The Sundance Fire on September 1, 1967, made a spectacular run of 16 miles in 9 hours and destroyed more than 50,000 acres. This run became the subject of a detailed research analysis of the environmental, topographic, and vegetation variables aimed at reconstructing and describing fire phenomena.

Fire behavior, fuel treatments, and fire suppression on the Hayman Fire - Part 4: Relation of roads to burn severity

Publications Posted on: September 27, 2007
Effects of roads on fire behavior intensity and severity can be studied directly or indirectly. A direct study of road effects would include uses by fire suppression, burnout operations, and delay of fire progress at the roadside. Interpretations after the fire burns are easily confounded by the unknown nature of suppression activities and fire arrival time, and fire behavior. Indirect study of road effects is by association.

Fire behavior, fuel treatments, and fire suppression on the Hayman Fire - Part 2: Description and interpretations of fire behavior

Publications Posted on: September 27, 2007
This report summarizes the progress of the Hayman Fire, its behavior, and the influence of environmental conditions. Data were obtained from narratives from fire behavior analysts assigned to the fire management teams, discussions with fire management staff, meteorology from local weather stations and Bradshaw and others (2003), photographs, satellite imagery, and public internet sites.

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