F. Richardson 1937 20-mile Creek May 25 cont. and of bushes averaging say 2 1/2'. Both these chaparral habitats are, tentatively, of one same dominant sagebrush (?). The high type is longer and varied with several other bushes, probably because of more water. The low, little side type is almost without exception of this sagebrush only. The bushes are low and rather definitely and regularly spaced - probably an indica- tion [of lack] of much available water. Occasional junipers are growing on the little sides, becoming more abundant higher up. The abundance of birds here is at once apparent. That this abundance seems centered just around the floor of the canyon, especially its mouth - seems true for several reasons. Water is here most plentiful, vegetation most varied and luxurious, civilization present, and insects more abundant and varied. A cursory observation of birds on the canyon sides shows a lesser abundance in numbers and species; Rock-Wrens and Sparrows, for example, being present in small numbers. (The rocky habitat should have been included in the above habitat discussion, for it becomes most prominent, especially higher up the canyon sides)