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74

Atlapetes, I
May 20, 1962
Atacaso

Arrive usual place 5:42 a.m. Not quite light yet.

rufinucha songs begin 5:45. At first all "Teeeeeooo feeoa feoo feeo" type [[image]]

Then I hear a few abbreviated "Teeeeeeeooooo feeeeooo" types.
[[image]]

Hear one "complete" song with R 5:52 a.m. Then a few more. All by same bird.

So the songs of the birds here seem to be just the same as on previous years.

Other birds continue songs without R after first bird has begun to utter "complete" songs.

6:05 a.m. One bird seems to be uttering songs comme ca. "Keeeyaalr kee kalr ka"
[[image]]

Most birds still not uttering R;s at end of song 6:07

6:28 a.m. Listening to one bird who utters both "incomplete" songs without R and "complete" songs with R. Usually in alternation! In both cases, the second whistle, the first short note, also tends to be higher pitched than the first, long, note. Just as in the diagram of "incomplete" song immediately above (and the latter were certainly