Nov., 9o4 I THE CONDOR 7

are California species and do not occur in Sioux county. The Acadian and alder flycatcher are eastern forms that are found there. The form of the horned lark as would be supposed is different in the two sections, the desert horned lark being the common form in Sioux county and the Mexican horned lark in Santa Cruz. The yellow-billed magpie of California has much the same habits as its eastern relative the black-billed, but it is not so abundant and consequently seems much wilder. Instead of the harsh call of the California jay or the rattle of the coast jay, in Sioux county the more musical croak of the pinyon jay is heard, while an oc- casional eastern blue jay is to be seen endeavoring to make the other birds know that he is there 'to jolly up the hawks and owls. Once in a while a Clarke crow may be seen perched on the top of some tall pine. Rarely also the common crow will be seen winging its way across the can,/on in search of better feeding grounds, and although it is quite uncommon in the Pajaro valley, it is more abundant than in Sioux county. That bird parasite, the cowbird, is common in Sioux county, and fortunately for the other birds it is not so in California. The bronzed grackle is an eastern bird without a California relative, but the red-wing of the east is re- presented by the bicolored black-bird. The family Fringillide is largely represented by different species in the two localities. The Santa Cruz birds are the purple finch, linnet, Arkansas goldfinch, intermediate, Nuttall, and golden-crowned sparrows, Point Pinos junco, Santa Cruz song sparrow, California, and spurred towbees. The Sioux county species are the American goldfinch, McCown longspur, western vesper, Baird, and western grass- hopper sparrows, white-winged junto, mountain song sparrow, Arctic towbee, dickcissel, and the lark bunting. It is likely that the intermediate, and golden-crowned sparrows occur in Sioux county during their migrations as they are common further east. The warblers and vireos are well represented in the two sections; the western warbling vireo, Pacific yellow-throat, and the Calaveras, Townsend, pileolated, and black-throated gray warblers are Santa Cuzspecies, while the plumbeous, and red- eyed vireos, the western yellow-throat and the Tennessee, and yellow-rumped warblers, and the redstart are Sioux county forms. One of the most interesting variations in the warblers is the fact that the Audubon warbler which is so com- mon a winter resident in the Pajaro valley is a rather common breeder in Sioux county. The remaining birds that were found in Santa Cruz county were the western martin, California shrike, American pipit, California thrasher, the Vigors, western winter, and rule wrens, California creeper, plain-tit, Barlow chickadee, intermed- iate wren-tit, bush-tit, ruby-crowned kinglet, western gnatcatcher, hermit thrush, varied thrush, and the western bluebird. Those in Sioux county are the white- rumped shrike, brown thrasher, catbird, western house wren, slender-billed nut- hatch, Townsend solitaire, wood thrush, eastern robin, eastern bluebird and the mountain bluebird. The best singers of both regions are found in these last two bunches. Perhaps the best California one is the California thrasher but [ do not think that it equals either the brown thrasher, the catbird, or the Townsend solitaire wbich are all rather common in the Nebraska region. ]3erkelev, California.