Redox, 1942 Calliope Hummingbird Bird E. Fork Sheep Creek, 5500 ft., Fresno County, Calif. May 25, 1942 Arrived at Calliope nest at 7:36. Bird sitting on nest and apparently undisturbed by our approach. Eggs are obviously not hatched or she would not sit still so long. She is now creeping over toward the nest. I wonder if she will feel free to leave if the hum comes into the nest. It is fairly cold this morning and she shows no desire as yet to move. Could help but contrast her appearance & her nest with that of the Robin. The latter's nest is much shallower than the Calliope's, speaking relatively, of course, the robin's head does not project as far from the nest as the hummingbird's & it has seemed to keep their beaks at about a 30° angle with the horizontal. The bird remained on her nest until & 7:50, about 15 minutes & then flew off for about a minute. Her return was made with a stop on a limb on the east side of the tree, about 4 feet below the nest. She sat on the limb for several seconds at the other tip and took her beak to me. She straightened her wings a little, and then swept directly around, under