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Mixed Diglossini, Aug. 15, 1967, IX  18

[[left margin]] Albi Scan [[/left margin]]
Wren Continues. Then wren shuts up. Then I hear a couple more Albi type R's. NODWAH.  Stop.  Then a brief burst of Scan Song. NODWAH. Stops. Scan again. NODWAH. Stops. Scan again. NODWAH. Stops. Repeated again & again. NOTE: Fog is well in during these Scan Songs. But they are not very long or intense-sounding. 

[[left margin]] Albi [[/left margin]]
Scans finally stop. Then, 4:36, hear more Albi type R's In distance. All NODWAH. Stop.

More rain 4:38 pm. Again, lasts only a few minutes Scan Sings briefly during rain. NODWAH. Stops.

4:43  There is some little hummingbird flitting around in areas where Scan-Albi dispute occurred earlier. But I can't tell if it is XX, XXI, or what.  In any case, nothing else pays any attention to it.

[[left margin]] Thalass Scan [[/left margin]]
COMMENT: I haven't heard a single Thalass anywhere in this area directly above station.  It certainly looks as if Scan and Thalass are mutually exclusive, at least here, even if their ranges (and possibly their habitat preferences?) overlap.

4:48 pm. A pair of Local Yellowbellies ✓✓52 shows up. Moving low thru scrub. 2-4ft up. Silent. Definitely alone.

[[left margin]] Scan Albi [[/left margin]]
Scan Singing more or less steadily. Twice stops briefly. And each time, a distant Albi interjects an R. No overlap. Then Scan resumes Singing steadily. And presumed Albi utters 5 or 6 more R's. All completely overlapped by Scan.

[[left margin]] Scan [[/left margin]]
5:00 pm. Singing Scan ignores another hummingbird (unidentified) flitting thru scrub only 10-15 ft away.
COMMENT: My observations here, so far, would sug