[Archibolchus alexandri] [Spizella atrogularis] Black-chinned Sparrow Oder Canyon, 5000 ft. Providence Mts. San Bernardino Co., Calif. May 30, 1938 10:30AM Have been listening to adult singing for past 15 minutes. Not heard when sitting atop Artemisia tridentata 3 ½' tall, facing sun throws head back till bill almost vertical & opens mouth wide with each note. Sang about 5 min averaging about one song per 10 seconds. Each are lasting 2 ½ seconds. After lot 5 min shifted position 10 yds E on the same Artemisia side hill, sang for 4 minutes, pausing at first investigating inside of the Ephedra Bush, then flying low and undulating tail appears same length of body) to another Artemisia, singing for 3 minutes; stopped. Singing disappeared flew ft. away in scrubbery After 2 min heard singing 35 yds below me in wash in Chrysothamnus so far from first singing post. Song: tweeee, twee, twee, twee twee-twee-ee-lee-lee. Accent on the first note, gaining speed running into hill only slightly lower than first note. After singing in wash resumed nearly same position on side hill (3rd singing post), sang for about 7 min. & still going. Song is slightly ventriloqual. Can be heard for great distance, yet when close may seem