LLS 015 1963 Aimophila cassinii July 4 mi.NW. Silver City, Grant Co., New Mexico. Found lone singing ♂♂ in bear grass, jumpers, & oak overgrazed area. Singing both perched & flight songs. Unable to collect bird. July 7 14 m. N. Sepur, Grant Co., New Mexico *1940 - pin feathers on back, breast, sides, scapulars, up.t.cov. + crissum. 1 tertial new. flight feathers old. Area was scrubby mesquite - up to 3-4 feet tall with some branches extending to 6-7 feet - growing in rather prostrate form as if kept back by cattle grazing; also Yucca elata - very scattered, a perennial composite about 12 inches high + grass. No tall grass - all area overgrazed. Heard at least four & probably 5 singing ♂♂. All were giving flight songs. Did not pursue flower from dead perch to 20 feet - just below top of are started to sing; ended just [illegible] before landing on same perch. ♂♂ were spaced at 50+ yard intervals where I collectis 2 arranged in triangle . .. Another 100-150 yards to east. When pursued birds dropped from exposed perches down into clumps of mesquite. Generally would not flush until I was within 20 feet + several times I had to beat brush. Several times flushed from ground.