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located during this survey, at least one pair probably nests on the <br /> site . <br /> II . Potential raptors on site <br /> The Cooper' s hawk (Accipiter cooperii) is a potential nesting <br /> raptor on the proposed project site, although it was not observed on <br /> this survey. The Cooper' s hawk is a species of special concern in <br /> California . In the Central Valley, Cooper' s hawks prefer to nest in <br /> lowland riparian forests . Preferred nest sites are located in <br /> scattered stands of live or blue oaks . The nest site is usually <br /> placed close to water and near a clearing in the dense canopy. <br /> Cooper' s hawks generally hunt by surprise, perching on an <br /> inconspicuous branch and capturing their prey with a short dash from <br /> the perch (Ehrlich et al . , 1988) . The Brovelli Woods project site <br /> provides potential nesting and foraging habitat for Cooper' s hawks, <br /> particularly the southwestern section of riparian habitat bordering <br /> the river. <br /> Another potential nesting raptor is the western screech-owl <br /> (Otos kennicottii) . Since this survey was conducted during daylight <br /> hours, it would have been very difficult to locate a screech-owl . <br /> The western screech-owl usually roosts in tree cavities during the <br /> day. In California, the western screech-owl is a common permanent <br /> resident of oak and riparian woodland. It has no special status in <br /> the state . The western screech-owl is usually a cavity nester, but <br /> will also utilize abandoned magpie nests (Ehrlich et al . , 1988) . <br /> The screech-owl forages over open areas, but never strays far from <br />