Reber, 1942 Calliope Hummingbird E. Fork Sheep Creek, King Canyon, 5500 ft. Fresno Co., Calif. Cedar Grove S. Fork Kings R., 4600 ft. Fresno Co., Calif. May 23, 1942 Changed position to the South East side of Tree since I was growing very, very fast. Hummer flew away, came back shortly, with one zigzagging under the branches, set facing the NEast, one eye turned on me. From this side, the nest is best concealed by a screen of leaves which do not actual hide the nest, but rather serve to disguise it. The bird's gray throat blends beautifully with the grey nest & the s mubby structure of the nest, as well as its enormous press grey color make it blend with the leaves. Yesterday, when I came up here, I walked right past the nest & each time one looks for it it is necessary to get ones bearings and start from the trunk before being able to find it. At 11:25 the sun had shifted so as to be concentrated directly upon the nest. Sat on nest for nearly a half-hour. Unfortunately I was not watching at the beginning of this period & do not know exactly how long she had been there (11:25-11:45) Sun shining fully on nest & mother back in a few minutes, about 1 1/2 minutes).