Apr 14 Sabins Ranch, However I heard song at W end of ridge S of that tributary so I followed it up entering the next canyon to S. At 9:06 chek del det det a scold repeated over over from Spanish oaks at Y in canyon. At 9:08 a clear melodious tur tur tur --- 6 to 9 phrases per volley, amplified by narrowness of canyon no doubt. The singer took a cautious perch then I heard a sip as its mate flew down across canyon - singer followed & continued song steadily until 9:15. 2 min later I was admonished for disturbing the pair as I walked thru patch of scrubby oak (postoak?) on flat between 2 tributaries. 9:25 bird upstream on westernmost tributary singing tur -- tur --- - (pita --- from down canyon to W) Former moved upslope into junipers W and was still singing then at 9:30. I picked up gun & arced S over field & worked up E side At 8:47 song from base of hill where I had followed bird at 7:55 At 9:55 rapid tur tur tur faster there and persistent song from along the creek, one near, other distant; (low bird) 9:00 pair of yesterday I believe). Same rapid tur --- - from oak-juniper 25 yds SE upslope from where I took pair 549-55D yesterday - bird moved N at 10:03. It commenced to sing again at 10:07 and moved 20 yds E a minute later. As I moved N along the creek I could hear it sing from time to time. I walked upstream in a leisurely fashion but heard no bird until 10:25. The much shot - at S of the tributary farthest N was singing then; bird to E sang alternately.