ML 71792


Lined Seedeater -- Sporophila lineola More
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Paul A Schwartz
4 Oct 1973 at 13:05

  • Venezuela
  • 7.0 km N of San Fernando de Apure; Rta. 2 X Guayabal
  • 7.9   -67.47
  • 50 meters
  • Mono
    Sampling Rate
    Bit Depth
  • Sennheiser MKH 405
  • Parabola 91.4cm (36in)
    Equipment Note

NOTES: Neotropical Institute Cut #61. Bulk reel #520
Weather: Cloudy, fair.
a) Natural song (simple). Quality: "1" (background noise). Level: +2. 203 tape. LN.
b) After playback of Aragua tape loop. There was some delay before bird began to sing again. On three occasions when I stopped recording due to extreme traffic noises, the bird sang complex phrase (but I eventually recorded one or more). Quality: 1 (background noise). Level: +2.
Then after more playback (bird's voice changed slightly, lowering in pitch and apparently slowing in rattle-rate). (Could this be this bird?) [Referring to next cut] Quality: "1" (background noise). Level: +2.
In the area of Cut 61 there were three birds singing, all this type song. Two were seen and were very heavily mottled on breast, no visible crown patch. Another bird seen ~ 15 km to north (this is ~6 km south of Camaguan and very near the intersection to Avarito) of this place was also very heavily mottled: black with white spots on chest and heavy, long "tiger stripes" on flanks.
A bird was collected at this same place 5 October; it is heavily mottled and with some flank striping but not nearly as heavily so as the bird seen.
One was collected = male #[blank]; plumage much worn and therefore some white shows on crown with bird in hand.
Note: 4 October 1973. In PM driving west from San Fernando I stopped several places that looked appropriate and tried playback with no results; at one place thought I heard a bird when I stopped but playback produced nothing. S. minuta and S. intermedia were occasionally found singing but not very actively. I then entered a side road that turned and proceeded also to west and ~17 km west of San Fernando some birds flew up that had been bathing. I stopped and played tape loop and one bird immediately reacted by flying in (~4:30 PM); it was very heavily mottled and in obvious full molt. A drive several more km along this road, with playback, produced no more birds so I returned to same area. No birds singing but playback immediately brought in two: the same molting bird and another apparently also in molt as had short tail; it too was heavily mottled. The first was collected (= male #[blank]). The second sang some but used the "typical" song very little, singing instead a song different from any I've ever heard (attempted to record this failed, as bird sang very little). This song pattern may be ~ similar to that of Cut [blank].
From ~5:30 PM on, in the adjacent field which was flooded and to which I could not gain access, I saw several times lineola, one group of ~10 of which ~4 were adult males; other times single males and also on two occasions single male bouvronides, both very heavily mottled.
In this area the Panicum maximum has apparently finished seeding and from this, the poor reaction of the birds, and the obvious molt of > two of the four bouvronides seen, I believe nesting in this area has finished for this year.

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