K Dixon 1951 Parus atricristatus 10. Feb 28. Santa Ana Wildlife Refuge At 7:06, titmice called from tree beside brickpile see si cha di di dub - call repeated over & over but mate sang from tree 75 feet to N. This bird then flew N to join mate & they foraged in that area. At 7:20 they were in adjacent trees, one doing most of the calling see si si sub dut - mate flew to Ebony tree across drive & talkative bird joined her. At 7:30 they were in the trees SE of the brickpile & NW the house. I walked down the road past the coral but did not hear any titmice there. Nutmeats were gone from the tray on top of the coral post. I returned at 7:40 and noticed a pair of titmice in second moss-covered ebony tree. Nutmeats not taken from tray in minosa. At 7:45 calls of two pairs of titmice one near moss- covered ebony where pair had roosted, the other NW second such ebony. Calls "see si su out" exchanged. Also "chub dub dub dit dit" harsh, scolding. I followed one bird as it move SW thru dense wood from second moss- covered tree - call see pi deh deh deh and deh dehhdeh at 7:57 perched on high perch calling plaintive see seh deh see seh deh high pitched thin. Mate joined bird then. No further calls W of house in next hour. 9:10 I encountered 2 titmice together in woods 100 ft S of lime and 100 ft W coral. They foraged calling sip but no other notes. 50 ft to E another pair foraged in ebony trees W road. I walked S to look for a