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Viol n.et-green swallow. The violet-green swallow was the 5��rorx? !lust a!,wi� ant <br /> s,:ecies observed !average abundance of 6.0 individuals/Itun) . This species <br /> was also observed in all five vegetation types and was --,ie secund 1x)st UL:ui- <br /> dant species observed in the alfalfa field, grassland, pasture, juniper and sage- <br /> brush types. Eowever, in all instances, this species was observed as a "flyover", <br /> `_oracing on the f'_yina insects above each vegetation type. Since the study <br /> area is small and the passerine transects were placed within �,. mile of <br /> each other, the same individuals were probably observed over each vegetation <br /> type. `!'ius, the relative abundance indices for the violet-green. svrallow may <br /> be inflat(�,d. The violet-greer swallow exhibited a definite affinity for the - <br /> alfalfa fie--. <br /> Com^ion crow, The common crow was the third most abundant species observed. <br /> Although the C rlon grow was not found in high numbers in any habitat type <br /> (1.6 individuals/km over all transects) , it did have a wide distribution <br /> arona habitats in the study area. It was found in all vegetation types but <br /> as a result of the law number of observations, an affinity for any one habi- <br /> tat was not apparent. Crows, like red-winaed blackbirds, tend to occur in <br /> flocks. <br /> rlestern meadowlark. The western meadavlark is a year-round resident of the <br /> study area and was the fou_rtn mast abundant species observed during the breed- <br /> ing bird surveys, averaaina 1.5 individuals/}cm over all types. This species <br /> was observed in the alfalfa field, grassland, pasture, and juniper habitats <br /> and exhibited an affinity for the juniper type. <br /> W nter Passerine Habitat. A total of six avian species were observed during <br /> the winter passerine surveys in the N�ucla study area. The four passerine <br /> species in decreasing order of relative abundance were: white-crowned <br /> G_)arrow, Oreqon junco, western meadowlark and raven. Non-passerine species <br /> observed curing the winter transects were the marsh hawk and ring-necked <br /> pheasant. <br /> Riparian. lore passerine species were observed in the riparian type than <br /> any other type surveyed during the winter passerine surveys (4) . Accordingly, <br /> this type had the highest species diversity index of any type su_veyed (0.91) . <br /> T11-s ham-tat also s,_,roorted the highest avian population 1190.7 individuals/ <br /> -34- <br /> 4 u i1 1 1 1980, <br />