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Important wintering Passerine Species. The white-crowned sparrow was the most <br /> abundant species encountered during the winter passerine surveys, averaging <br /> 14.3 individuals/km over all transects. This species was observed in the <br /> alfalfa field, juniper and riparian habitats and exhibited a definite affinity <br /> for the riparian type. White-crowned sparrows are usually found in thickets <br /> adjacent to fields or open areas (Robbins et al. 1966) . <br /> The Oregon junco was the second most abundant species observed averaging <br /> 8.0 individuals/)an over all transects. The Oregon junco was observed in the <br /> juniper and riparian types and exhibited an affinity for the riparian type. <br /> This species is usually abundant in coniferous forests; however, in winter <br /> the Oregon junco is con on in farmyards and fields (Robbins et al. 1966) . <br /> The third Trost abundant species observed was the western meadowlark averaging <br /> 7.1 individuals/an over all transects. However, this species was observed only <br /> in the alfalfa field habitat, where it was the mst abundant species observed <br /> (35.3 individual slkm) . The western meadowlark is a year-round resident of <br /> the study area. <br /> Although the raven was not found in high numbers in any habitat type, it did <br /> have a widespread distribution among habitats on the study area. It was found <br /> in all types sampled and as a result of the low number of observations an <br /> affinity for any one habitat was not apparent. <br /> Qualitative Surveys. Qualitative surveys of areas not subjected to strip <br /> census were conducted during all wildlife studies to compile a complete list <br /> of birds occupying the study site. Passerine species observed during these <br /> qualitative surveys but not encounterE�d on transects were: rock wren, western <br /> kingbird, and yellow warbler. These passerines were sighted during the summer <br /> qualitative surveys. The western kingbirds are oommnly found about farms <br /> and along streams where scattered trees provide nesting opportunities. The <br /> one western kingbird sighted on the study area was in a grove of trees at the <br /> farmstead on the study area. <br /> Rack wrens are common in rocky areas. One rock wren was observed in the pin- <br /> -36- <br /> J U N i 1 1990 <br />