Evaluation of lasers to disperse American crows, Corvus brachyrhynchos, from urban night roosts

@article{Gorenzel2002EvaluationOL,
  title={Evaluation of lasers to disperse American crows, Corvus brachyrhynchos, from urban night roosts},
  author={Warner P. Gorenzel and Bradley F. Blackwell and Gary D. Simmons and Terrell P. Salmon and Richard A. Dolbeer},
  journal={International Journal of Pest Management},
  year={2002},
  volume={48},
  pages={327 - 331}
}
American crows ( Corvus brachyrhynchos ) have a long history of causing agricultural damage in North America. Shooting and bombing at crow night roosts have been employed to reduce such damage. Most roosts were located in rural locations, but in the latter half of the 1900s crows began to roost in urban locations. Urban crow roosts are presently a nationwide problem in the United States. Thousands of crows at a roost create problems for businesses and residents. Improved control techniques are… 

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Communal roosting is common among corvids (Goodwin 1976:32). An apparent urbanization of American crows (Corvus brachyrhynchos) in the latter half of the twentieth century (e.g., Ryser 1985, Knight

Characteristics of American Crow Urban Roosts in California

American crows (Corvus brachyrhynchos) roost in urban areas across the United States creating problems resulting from fecal droppings, noise, and health hazards, and a logistic regression model was developed with 4 variables that correctly classified status of 85% of roost or nonroost trees.

Lasers as nonlethal avian repellents

It is contended that lasers will prove useful as avian repellents, but further controlled studies are needed to evaluate species-specific responses relative to laser power, beam type, wavelength, light conditions, and captive versus field scenarios.

Midwinter Distribution of the American Crow in New York State

The American Crow (Corvus brachyrhynchos) because of its gregarious roosting habits lends itself admirably to census methods. In New York State the winter range of the crow falls conveniently into 20

Evaluation of moderate and low-powered lasers for dispersing double-crested cormorants from their night roosts

The double-crested cormorant (Phalacrocorax auritus) is the primary avian predator on the southern catfish industry, estimated to cause $5 million in damage per year. To date, the most effective

LASERS AS NON-LETHAL AVIAN REPELLENTS: POTENTIAL APPLICATIONS IN THE AIRPORT ENVIRONMENT

Research conducted by the U.S. Department of Agriculture’s (USDA) National Wildlife Research Center (NWRC) indicates that lowto moderate-power, long-wavelength lasers (630− 650 nm) provide an

Urban crow roosts - a nationwide phenomenon?

We conducted surveys of federal officials nationwide and of local officials in California to determine historical and temporal aspects, location, size, and control of American crow (Corvus

The Midwinter Distribution of the Crow in California

A survey of wintering crows in California was conducted during the years 1935-40, patterned after the New York State survey of 1932-33, with the cooperation of game wardens, county agricultural agents, farm advisers, high school instructors in vocational agriculture and many independent individuals.

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BIO-ACOUSTIcs has developed rapidly in the past decade as a tool in the study of communicative mechanisms in wild birds (Hinde, 1969). The Common Crow (Corvus brackyrhyncihos) is an ideal

Crow damage to almonds increasing; no foolproof solution in sight

Of all birds causing damage to almonds in Sutter and Yuba counties, crows cause the most, according to a survey of growers, and growers are willing to spend far less than the potential value of nuts lost.