Recreation changes the use of a wild landscape by corvids

  title={Recreation changes the use of a wild landscape by corvids},
  author={Lauren E Walker and John M. Marzluff},
ABSTRACT As urban areas have grown in population, use of nearby natural areas for outdoor recreation has also increased, potentially influencing bird distribution in landscapes managed for conservation. Members of the family Corvidae (crows, ravens, jays, and magpies) have strong interactions with humans and may be directly affected by recreation in wild landscapes. In Mount Rainier National Park, we evaluated the effects of vegetation, visitor use, and the availability of human-subsidized food… 

Simulating the success of trail closure strategies on reducing human disturbance to nesting Golden Eagles

ABSTRACT As nature-based recreation grows in popularity, there is concern for reduced fitness of animals exposed to chronic disturbance by these activities. Golden Eagles (Aquila chrysaetos) and

The spatial and temporal exploitation of anthropogenic food sources by common ravens (Corvus corax) in the Alps

Background Anthropogenic food sources (AFSs) are widespread in human-transformed landscapes and the current scale at which they occur drives ecological change at the individual, population, and

Steller's Jay (Cyanocitta stelleri) space use and behavior in campground and non-campground sites in coastal redwood forests

ABSTRACT Small-scale disturbance and trash associated with campgrounds may provide opportunities for generalist species in areas important for conservation. We examined the influence of campgrounds

Influence of food subsidies on the foraging ecology of a synanthropic species in protected areas

The impacts of seemingly spatially constrained human recreational activities can have spillover effects on animal communities at relatively broad spatial scales within protected areas.

Minimal bias in surveys of grassland birds from roadsides

ABSTRACT Edges, including roads, can have unintended deleterious impacts on wildlife. However, roads also present opportunities for replicable, and spatially and temporally consistent, wildlife

Lifetime reproductive success of Snowy Plovers in coastal northern California

Results indicated that enhancing the cryptic nature of substrates (for eggs and chicks) may be a productive means of increasing reproductive success in this threatened species.

Behavioral mechanisms leading to improved fitness in a subsidized predator

Jays appeared to be under-matched to prevalent resource subsidies despite high densities and behaviors expected to lead to resource matching, and results indicate that local resource subsidies within protected areas can result in source habitats for synanthropes, potentially impacting sensitive species over broader spatial scales.



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Urbanization reduces the quantity of native vegetation and alters its local structure and regional spatial pattern. These changes cause local extirpations of bird species associated with native

Wildlife responses to pedestrians and dogs.

As participation in outdoor recreational activities escalates, land managers struggle to develop management policies that ensure coexistence of wildlife and recreation. How- ever, this requires an

Common Raven Activity in Relation to Land Use in Western Wyoming: Implications for Greater Sage-Grouse Reproductive Success

Abstract. Anthropogenic changes in landscapes can favor generalist species adapted to human settlement, such as the Common Raven (Corvus corax), by providing new resources. Increased densities of

Tourism, mountain huts and distribution of corvids in the Bavarian Alps, Germany

The results suggest that corvids opportunistically adjust their range use to the availability of resources offered by tourism, and mountain huts and other places frequented by humans may contribute to an increased carrying capacity for corvid at higher elevations.

The Impact of Nature-Based Tourism on Bird Communities: A Case Study in Pallas-Yllästunturi National Park

The results of the study suggest that the current recreation pressure has not caused substantial changes in the forest bird communities within the Pallas-Yllästunturi National Park and it is suggested that the abundances of urban exploiter species could be used as indicators to monitor the level and changes of urbanization and recreational pressure at tourist destinations.


Abstract We assessed the effect of campgrounds on American crow (Corvus brachyrhynchos) populations on the Olympic Peninsula in Washington, USA, because crows are potential nest predators for marbled


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Space use by Common Ravens in Marbled Murrelet nesting habitat in Northern California

Little is known about space use by Common Ravens (Corvus corax) in coastal old-growth redwood (Sequoia sempervirens) forests in northern California despite their identification as nest predators of

Effects of ecotourists on bird behaviour at Loxahatchee National Wildlife Refuge, Florida

Increasingly, natural areas are exposed to people who come to view, study or photograph wildlife. In order to develop appropriate management plans for both avian and human use of natural environments