A minimum treatment consisting of cutting, piling, and burning small white fir and incense cedar from 1 to 11 feet in height was carried out in the spring of 1966 on two 20-acre plots in a cutover giant sequoia forest. Some broadcast burning was also employed. During the first two years following this initial manipulation, (1) numbers of white fir and incense-cedar decreased substantially on the treated plots while holding steady or increasing on the control plots; (2) numbers of nesting wood pewees and robins increased; (3) four species of birds requiring brush, chaparral, or dense shady vegetation in their habitat decreased in numbers or disappeared; (4) the remaining 24 species showed no obvious shift in numbers found nesting in the area.
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