K DiXon 1950 Petrochelidon June 16. Univ. Calif. Campus, Flameda Lo., Calif. one of several foggy days. Two juvenile Cliff Swallows were brought in to the Museum in the early afternoon, having been found in rather helpless condition on the ground outside the Bldg. They appeared to be intact but perhaps too weak to fly. hoiz Taylor & I fed one a mealworm & left it caged to rest. Bill harghuret captured it as it flew around the room about an hour later. I fed this bird another worm & banded it 41-39559 and left it caged. I fed the second & left it caged also. The first would not fly from my finger when I held it out the 7th story window. I released it about 2 hours after it first was brought in. I banded the second 41-39558 I released it also 2 hours after its feeding. Both birds flew well when released from 3rd floor window although the second (apparently a younger bird) lost altitude before it flew out of sight into glade N of W branch of creek N of LSB. Aug 9. Cliff Swallows not seen yesterday or today although I looked for them - last one seen on campus evening Aug 7. Aug 16. This evening as on August 12, I saw Cliff Swallows flying about the NE corner of the Men's Gymnasium. There is one nest here above the window on the E side, top story, perhaps a focal point for activity. None seen on S side of Life Sci Bldg for over a week.