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Measures to discourage crowsMeasures to discourage crows


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Posted on January 10, 2014

Large flocks of crows have begun to congregate in California Borough, and the University will take measures to discourage them from shifting their roosting sites to campus.

Beginning Jan. 12, technicians will use bright lights and/or a natural, plant-based “fog” to disperse flocks in the borough. At the same time, anti-roosting measures will be used on campus to discourage crows from re-locating to University property.

The crow dispersal measures typically are deployed beginning at dusk and continuing for two or three hours as needed. Specific locations will be based on the birds’ activity patterns. Relocation efforts are expected to continue for at least five days.

Humane measures

The laser lights and natural grape-extract mist are not harmful to humans or other animals. These humane measures are intended to discourage the flocks from settling on campus, where they can create unpleasant and unsanitary conditions.

Once crows have identified a winter roosting site, it is typical for them to return to the area year after year. Cal U has taken steps to relocate large flocks of crows each winter since 2010.

The crow dispersal program has been approved by the U.S. Department of Agriculture and will be carried out by trained and licensed pest removal technicians.

The anti-roosting measures do not harm the crows; they simply change their roosting habits and encourage them to relocate. 


The California University Police Department is aware of the measures, which are being overseen by the University’s Office of Environmental Health and Safety. Anyone with questions or concerns may contact Cal U Police at 724-938-4299. 

The USDA-approved crow dispersal program is used annually on the grounds of the Capitol Complex in Harrisburg. See answers to Frequently Asked Questions from the Pennsylvania Department of General Services.