Laserfiche WebLink
C <br />km). The white - crowned sparrow was most abundant species encountered <br />(58.7 individuals/km) and showed an affinity for this type. <br />The song sparrow was observed only in the riparian habitat-during the winter <br />surveys and was observed in sufficient numbers to indicate an affinity for <br />this type. The other species which showed an affinity for ribarian habitats <br />during winter surveys was the Oregon junco. <br />Alfalfa field. Three passerine species were observed In the alfalfa field <br />during the winter surveys: western meadowlark, white- crowned sparrow and <br />raven. The western meadowlark and white- crowned sparrow were the most abundant <br />passerines encountered with relative abundance indices of 35.3 and 12.0 <br />individuals/km, respectively. This habitat supported the second highest <br />tonal avian population (50.0 individuals/,m) and the second highest species <br />diversity index (0.78). The western meadowlark was observed only in the <br />alfalfa type during the winter transects and exhibited an affinity for this <br />type. <br />Juniper. The juniper vegetation type supported three passerine species <br />during the winter surveys: Oregon junco, white- crowned sparrow and raven. <br />The former species was the mast abundant species encountered (15.3 individuals/ <br />km). This habitat type supported the third highest total avian population <br />(17.3 individuals/Ian). The species diversity index (0.43) was <br />relatively low because most observations were of the Oregon junco. Accordingly, <br />the Oregon junco exhibited an affinity for the juniper type. <br />Grassland pasture. The only two passerine species encountered in the grassland <br />pasture habitat during the winter passerine transects were the.raven and cemmon <br />crow. This habitat supported the second lowest total avian population (3.3 <br />individuals/lac). The Shannon - Weiner species diversity index was 0.50. <br />Upland sagebrush. The raven was the only species encountered along the sace- <br />brush transects during the winter surveys. Accordingly, the Shannon - Weiner <br />diversity index was 0.0. This hatbitat sup x zted the lamest total avian xpu- <br />lation (2.0 individuals/km) during the winter survey. <br />-35- <br />SUIT i 1. 14813 <br />