Feb 28 Santa Ana Wildlife Refuge same direction keeping ahead of me. Their notes see see see sounded plaintive and slightly more melodious than those of other birds I had heard here; they reminded me of Mountain Chickadee notes. I walked NW and came to a shallow streambed at 12:20. Underbrush was not the tangle of vines that the level surrounding had. The old river bed is about 50 ft wide and had ebony, "whitebark" and some sort of palo verde tree -- others too! One titmouse foraged in terminal twigbery of ebony branch see see, thus at 12:32. a minute later both in rhannaceous (?) tree 40 ft E. In this tree the titmice foraged on leaves & twigs of peripheral foliage where an Orange-crested Warbler had been working earlier. One got an extra loud sip as I looked up and seemed to be flying away from his mate's position -- courtship feeding? Once a titmouse flitted out to pick an insect (?) off a leaf & returned to his perch to swallow it. The birds worked in the upper (= green, leafy) part of this tree, then moved to next (same kind) at 12:43, not pausing in Spanish moss. In taller leafless tree E at 12:45 flying 5 two minutes later (my movement or Green Jay flight past tree?) Birds foraging in leafless tangle on S bank at 12:50. I walked E along riverbed & found that its north bank met road in trees in which pair of titmice had foraged at 1:15 on Feb 27 -- south pair of casual dispute. Perhaps these were the same individuals. 1:00 - Titmice foraging in tree W of one where I had food tray. One bird in 5 minutes: Spanish moss 10, trunk bark 2, stump 1 (the ?) By 1:07, both were in the next tree N