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California Department of Fish and Game <br /> Natural Diversity Database <br /> Full Condensed Report for Selected Elements-Multiple Records per Page <br /> Buteo swainsoni <br /> Swainson's hawk Element Code:ABNKC19070 <br /> Status NDDB Element Ranks Other Lists <br /> Federal: None Global:G5 CDFG Status: <br /> State: Threatened State:S2 <br /> Habitat Associations <br /> General: (NESTING)BREEDS IN STANDS WITH FEW TREES IN JUNIPER-SAGE FLATS,RIPARIAN AREAS AND IN OAK SAVANNAH. <br /> Micro: REQUIRES ADJACENT SUITABLE FORAGING AREAS SUCH AS GRASSLANDS,OR ALFALFA OR GRAIN FIELDS SUPPORTING RODENT POPULATIONS. <br /> Occurrence No.692 Map Index: 36523 EO Index: 31520 Dates Last Seen <br /> Occ Rank: Good Element: 1987-06-30 <br /> Origin: Natural/Native occurrence Site: 1987-06-30 <br /> Presence: Presumed Extant <br /> Trend: Unknown Record Last Updated: 1997-08-27 <br /> Main Source: SANDERS,S.&M.GREEN 1987(OBS) <br /> Quad Summary:UNION ISLAND(3712174/4620) <br /> County Summary:SAN JOAQUIN <br /> Lat/Long: 37.803410/-121.423910 Township: 01S <br /> UTM: Zone-10 N4185173 E638749 Range: 05E <br /> Radius: 1/10 mile Mapping PrecisionNON-SPECIFIC Section: 33 Qtr:XX <br /> Elevation: 5 ft Symbol Type:POINT Meridian: M <br /> Location:UNNAMED SLOUGH,LOCATED JUST UPSTREAM FROM THE CONFLUENCE OF OLD RIVER AND TOM PAINE SLOUGH,3 MILES NORTH OF TRACY <br /> Location Detail:THE DENSELY VEGETATED SLOUGH WHERE NEST TREE IS LOCATED FORMS THE NORTHEASTERN BORDER OF A LARGE ISLAND.THE <br /> BANKS/EDGES OF THIS ISLAND SUPPORT LUSH,RIPARIAN VEGETATION,BUT THE INTERIOR OF THE ISLAND IS USED FOR AGRICULTURE. <br /> Ecological:NEST WAS NOT VISIBLE,BUT PROBABLE NEST TREE WAS LOCATED ALONG THE SLOUGH.SLOUGH IS ABOUT 5 M WIDE,WITH DENSELY <br /> VEGETATED BANKS.MATURE VALLEY OAKS DOMINATE,WITH WILLOWS AND COTTONWOODS INTERMINGLED.AGRICULTURAL LAND <br /> SURROUNDS. <br /> General: ON 30 JUNE 1997,TWO DARK-PHASE SWAINSON'S HAWKS WERE OBSERVED IN THE SLOUGH AREA,AND WERE OBSERVED BRINGING FOOD <br /> TO AN UNSEEN NEST/NESTLINGS ON TWO OCCASIONS. <br /> Owner/Manager:PVT <br /> Occurrence No.714 Map Index: 41217 EO Index: 41217 Dates Last Seen <br /> Dec Rank: Good Element: 1999-04-01 <br /> Origin: Natural/Native occurrence Site: 1999-04-01 <br /> Presence: Presumed Extant <br /> Trend: Unknown Record Last Updated: 1999-06-14 <br /> Main Source: BRIDEN,L.1999(OBS) <br /> Quad Summary:UNION ISLAND(3712174/4620) <br /> County Summary:SAN JOAQUIN <br /> Lat/Long: 37.80455-/-121.44881- Township: 01S <br /> UTM: Zone-10 N4185263 E636555 Range: 05E <br /> Radius: 80 meters Mapping PrecisionSPECIFIC Section: 32 Qtr:SW <br /> Elevation: 5 ft Symbol Type:POINT Meridian: M <br /> Location:JUST EAST OF THE TRACY BOULEVARD BRIDGE OVER OLD RIVER,3 MILES NORTH OF TRACY. <br /> Ecological:HABITAT CONSISTS OF SPARSE RIPARIAN ON THE ISLANDS,AS WELL AS ON THE BANKS;SURROUNDED BY AGRICULTURAL LANDS. <br /> Threat: THREATENED BY HUMAN DISTURBANCE,AND POSSIBLY THE PRESENCE OF GREAT HORNED OWLS AND RED-TAILED HAWKS NESTING <br /> NEARBY. <br /> General: 2 ADULTS OBSERVED(ONE IS A DARK MORPH)NESTING ON 1 APR 1999 <br /> Owner/Manager: <br /> Commercial Version--Dated September 30,2005--Wildlife and Habitat Data Analysis Branch Page 13 <br /> Report Printed on Tuesday,July 01,2008 Information Expired 03/30/2006 <br />