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Calls can be broadcast from a "boom box", a portable CD or cassette player, or an mp3 <br /> player attached to amplified speakers. Calls should be broadcast loudly but without <br /> distortion. <br /> Recordings of this survey sequence (compact disc or mp3 sent via email) are available free <br /> of charge by contacting: <br /> David Klute <br /> Bird Conservation Coordinator <br /> Colorado Division of Wildlife <br /> 6060 Broadway <br /> Denver, CO 80216 <br /> Phone: 303-291-7320 <br /> Email: David.Klute@state.co.us <br /> Identification <br /> Adult burrowing owls are small, approximately 9-11 inches. They are brown with white spotting <br /> and white barring on the chest. They have long legs in comparison to other owls and are <br /> frequently seen perching on prairie dog mounds or other suitable perches (e.g., fence posts, utility <br /> poles) near prairie dog towns. Juvenile burrowing owls are similar to adults but smaller, with a <br /> white/buff colored chest that lacks barring. <br /> General information about burrowing owls is available from the Colorado Division of Wildlife <br /> website: <br /> http://wildlife.state.co.us/WildlifeSpecies/Profiles/Birds/BurrowingOwl.htm <br /> Additional identification tips and information are available from the U.S. Geological Survey <br /> Patuxent Wildlife Research Center website: <br /> http://www.mbr-pwrc.usgs.qov/id/framist/i3780id.html <br /> What To Do If Burrowing Owls Are Present <br /> If burrowing owls are confirmed to be present in a prairie dog town, there are two options before <br /> proceeding with planned activities: <br /> 1. Wait to initiate activities until after November 1st or until it can be confirmed that the owls <br /> have left the prairie dog town. <br /> 2. Carefully monitor the activities of the owls, noting and marking which burrows they are <br /> using. This is not easy to accomplish and will require considerable time, as the owls may <br /> use several burrows in a prairie dog town. When all active burrowing owl burrows have <br /> been located and marked, activity can proceed in areas greater than 150 feet from the <br /> burrows with little danger to the owls. Activity closer than 150 feet may endanger the owls. <br /> Reference <br /> Conway, C. J. and J. C. Simon. 2003. Comparison of detection probability associated with <br /> Burrowing Owl survey methods. Journal of Wildlife Management 67:501-511. <br /> revised 02/2008 <br /> See also:"Controlling Prairie Dogs:Suggestions For Minimizing Risk To Non-Target Wildlife Species" <br /> Colorado Division of Wildlife 03/2007 <br /> 3 <br />