[Calypste costae] Costa Hummingbird 1 mi. S.W. Keeler Springs, 4500 ft., San Bernardino Co., Cal. May 17/38 Stopped to photograph cactus & found Costa nest + 2 eggs about 8' up, placed atop dead remains of Joshua blossom. Nest same color as dead blossom & resembled same very much in appearance. I only seen and she wasn't at all wary. When not occupied she flushed when I was about 3' away. Flushing distance became shorter & shorter till I could put my hand slowly within 4" before she would flush. When she did flush, until I should put my hand on the nest she would peck at my finger. Bell or dual side covered to base with yellow pollen. Nest shaded by green Joshua leaves 5" above nest. Favorite perchers are uppermost tips of Yucca breveta where she may perch 5 minutes, scratching & preening. Notes given by ? Costa are nothing like Allen, Rufous, or Anna. Note is higher pitched, always solitary, and even much more musical and metallic, not staccato as in above mentioned species. Food plants about an Paint Brush Y. breveta blossoms, and some other bright orange species probably a mallow. When disturbed I would flush about 5 times (flushed