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Mar., 1915 BIRDS OF A BERKELEY HILLSIDE 79 pus, where no shooting is allowed at any season. On the hill-slope above us, to the south, are only a few scattering oak trees, but there is an almost impene- trable thicket of spiraea and hazel brush, protected by a high bank formed by the cut for the road, which makes an ideal nesting site for the birds. The hill as it slopes to the west, outside the canyon, is covered by an old orchard and some garden shrubs, with one date-palm and a group of pine and cypress trees on the terrace which overlooks the city and the Golden Gate. From the whole of the region described the English Sparrows are absenl except as fall gormandizers. During September, October .and November, thousands of them come up from the town below into the old orchard, where they feed on weed seeds and remnants of the scant crop of the diseased trees. Occasional reconnoitering parties have appeared in the spring-time about our house, but they have not met with a hospitable reception. The birds of this hillside region fall naturally into two groups: (1) those found more commonly in the orchard and on the more or less open slope to Fig. 30. GOLI.E?-CRO?VNED ?PAgRO?VS, AT THE LEFT IS S?O?VN ONE ON TtIE (?ovr o? ?vm) Photo at left by Amelia ?. Allen; at right by T. I. Storer. the west; and (2) those which show a decided preference for the dosely for- ested and brush-covered area of the north-facing slope immediately about the house. A small number seem equally st home in both sections, as, for example, the Red-shafted Flicker, Califor?a Blue Jay, California Towbee and Hermit Throb. The raptorial birds of the western group include the Sparrow Hawk (Falco sparverius sparverius), which is almost always to be found in the winter sea?n surveying the field from the top of one of two telephone poles. upon which it elee? to perch. Western Red-tailed Hawks (Buteo borealis calurus) soar above in the illimi?ble blue on wings of strength. While at night the three owls (Aluco pratincola, Otus asio bendirei, Bubo virginianu.s pacificus) make the dar?e? v?ble by their eries. The A?a ?ummingbird ((Jal.ypte an.ha) ?ows everything that happens in the whole area the year aro?d, and every summer the AHen IIummingbird (Selasphorus alleni) guards its nest from the same lookout on the same electric-