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[[circled]]53[[/circled]]

[[margin in red]] Cy Thalass [[/margin]]
9:05. Cy still Singing slide area. Still overlapped by Thalass. Then Thalass shuts up. Cy continues NODWAH.

Going over crest of pass 9:25.

[[margin in red]] Brun Thalass [[/margin]]
A couple of hundred yards down, a Brun flies across path. Silent. Alone. Passes within 3 ft of a Singing Thalass. No visible reaction by either bird. Further on, another Brun flies across road. Lands in low scrub. Utters Twitter as it lands. Completely overlapped by distant Thalass Songs.

[[margin in red]] CC Brun Yhalass [[/margin]]
Then see single CC perched 3 ft up in bush above low scrub. No more than 20 ft from where Brun was seen a few minutes earlier. CC utters Twitter Completely overlapped by Thalass. CC flies away. A second (or less) after it flies a Thalass comes and hovers over the perch on which the CC had stood. [[underlined]] Interspecific hostility? [[/underlined]]

Stop observations 10:15 am.

May 21, 1972
Machu Picchu

Going to work on road below hotel this morning.

SEE TODAY'S NOTES ON MIXED DIGLOSSINI

May 22, 1972
Machu Picchu

SEE TODAY'S NOTES ON MIXED DIGLOSSINI