by slightly moving hand 3 away) and then retire about 5 minutes to guess perches. Could always tell when she was returning by the "tink" note. Sounded more like Desert Sparrow note. In flight seems to make less hum than above mentioned species. Always would face camera & so broadside shots were difficult. Nest constructed of bits of scales of portions of Joshua petals (dried), fine bits of fibers (probably decayed Joshua leaves), several large feathers on the rim + interior, and all densely held together by spider webs. Reminds of Joshua bloosom on which nest placed, had some extraneous spider webs over it probably misplaced by bird. Approach to nest always made indirectly by fleeting thru Joshua limbs 10' away before landing. Notes solitary when approaching given about average every 4 seconds (may not give any). In flight I did much flitting of tail showing large white areas.