26 
252. CALIFORNIA BLUE GROSBEAK. Guiraca caerulea 
salicarius. 
Rather common summer residents of valleys in the foothills. 
258. LARK BUNTING. Calmospiza melanocorys. 
: pon spring migrants in the coast region. Usually migrate 
in flocks. 
Family TANGARIDAS. Tanagers. 
A family of rather small birds confined to America and most 
numerous in the tropics. The males are brightly colored but the 
females are comparatively plain. The food is insects and fruit. 
254. WESTERN TANAGER. Piranga ludoviciana. 
Common, but irregular, spring migrants throughout the 
county. Rare summer residents in the highest mountains. Oc- 
easionally the migrating birds do considerable damage to cherry 
crops. 
Family HIRUNDINIDA. Swallows. 
A rather large family of small birds, cosmopolitan in distribu- 
tion. The food is exclusively insects, caught while on the wing. 
Very few remain in temperate climates through the winter. Very 
beneficial. 
255. WESTERN MARTIN.  Progne subis hesperia. 
Infrequent or irregular summer residents of timbered localities. 
256. CLIFF SWALLOW.  Petrochelidon lunifrons. 
Common to abundant summer residents of suitable localities 
throughout the county. 
257. BARN SWALLOW. Hirundo erythrogaster. 
Infrequent summer residents along the seacoast. 
258. TREE SWALLOW. §Iridoprocne bicolor. 
Rather common migrants. Infrequent summer residents of the 
coast region. 
259. NORTHERN VIOLET-GREEN SWALLOW. 
Tachycineta thalassina lepida. 
Common migrants. Breed in small numbers in the mountains 
in knot holes of trees. 
260. BANK SWALLOW. §Riparia riparia. 
Rather common migrants. 
261. ROUGH-WING SWALLOW. Stelgidopteryx 
serripennis. 
Rather common migrants and breed in small numbers in the 
coast region. 
Family BOMBYCILLIDA. Waxwings. 
' Agsmall family inhabiting the temperate and arctic zones of the 
northern hemisphere. They are small birds, frequenting trees and 
shrubbery. The food is soft fruits and insects. Occasionally they 
eat cultivated fruits. Songless. 
262. CEDER WAXWING. Bombycilla cedrorum. 
Irregular winter residents. Occasionally appear in consider- 
able numbers. 
