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Atlapetes, Oct. 7, 1960, III.  (41)      

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of the bird who flew across the road) then began to sing "in response" to the bird who had flown across the road. I think this second bird's song phrases were more or less exactly like those of the first.

After a while the second bird stopped singing, but the bird who had flown across the road continued to sing frequently. By this time, however, I noticed that its song phrases were slightly different Comme ça:

[[image]]

"duh  duh   duh duh duh"

(The transcriptions of all these songs may be slightly misleading in one respect. All the notes of all the songs by both birds were thin, clear, high, whistles. Very reminiscent of ECN's in quality.)

This continued for at least 2 or 3 minutes Finally the second bird flew across the road also, and landed about 10 yards from the first. The first immediately stopped singing. Then the two birds hopped toward one another, through the brush, and presumably re-joined one another, although I could not see them any more at this stage. Perhaps significantly, I did not hear any sort of "greeting" song when they presumably met.

This incident would suggest that both the [[male symbol]] and [[female symbol]] of this species can sing; but that one sex does so more often than the other.

It is obvious that this species has a great variety of different types of song, like related species.

This afternoon I disturbed a pair of Yellow-throats, coming upon them rather unexpectedly. One bird stood in the open and watched me for several minutes. Frequently stood in the posture drawn on p. 4 above, with extreme CR. Also made int. mov. of flight bowing movements.

I think that CR must be an indication of a relatively strong escape drive. This bird was obviously nervous about me.

Transcription Notes:
[[image: lines above "duh duh uh duh duh"showing song pattern]] As per new instructions re images: use the word “image” placed in double brackets: [[image]]; optional - describe the image or images in the notes field of each respective page (see example pages)