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Interview :15 - 7:18 Play :15 - More
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Al Gentry  

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100%

 

 

 

Botany  

Guianan Warbling-Antbird -- Hypocnemis cantator 28:46 - 36:33 Play 28:46 - More
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Time of Day: 0610  

Marbled Wood-Quail -- Odontophorus gujanensis 29:30 - 36:33 Play 29:30 - More
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1 Adult Female
1 Adult Male  

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Natural
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duet

song

 

Time of Day: 0610. Response to playback: Normal song.  

Red-necked Woodpecker -- Campephilus rubricollis 40:59 - 41:11 Play 40:59 - More
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1 Adult Female
1 Adult Male  

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bill drumming

mechanical sound

 

Time of Day: 0620  

Chestnut Woodpecker -- Celeus elegans 41:09 - 41:18 Play 41:09 - More
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bill drumming

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Time of Day: 0620  

Red-necked Woodpecker -- Campephilus rubricollis 43:45 - 43:49 Play 43:45 - More
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1 Adult Male  

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Playback Self
 

call

 

Time of Day: 0625  

Guianan Warbling-Antbird -- Hypocnemis cantator 47:05 - 50:21 Play 47:05 - More
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1 Adult Female
1 Adult Male  

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Natural
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duet

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Time of Day: 0630. Response to playback: Normal song.  

Red-and-green Macaw -- Ara chloropterus 54:04 - 54:28 Play 54:04 - More
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Time of Day: 0635  

Red-crowned Ant-Tanager -- Habia rubica 58:09 - 1:00:17 Play 58:09 - More
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Time of Day: 0640  

White-flanked Antwren -- Myrmotherula axillaris 1:00:19 - 1:00:55 Play 1:00:19 - More
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Time of Day: 0640  

Ateles 1:04:13 - 1:26:45 Play 1:04:13 - More
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Time of Day: 0645  

Black-throated Antbird -- Myrmophylax atrothorax 1:11:40 - 1:13:00 Play 1:11:40 - More
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Time of Day: 0650  

Rufous-breasted Hermit -- Glaucis hirsutus 1:48:13 - 1:49:00 Play 1:48:13 - More
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Time of Day: 0730  

Turquoise Tanager -- Tangara mexicana 1:52:21 - 1:54:05 Play 1:52:21 - More
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Time of Day: 0730  

Gray Antwren -- Myrmotherula menetriesii 1:54:14 - 1:55:19 Play 1:54:14 - More
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Time of Day: 0735  

Blue-headed Parrot -- Pionus menstruus 1:55:29 - 1:56:00 Play 1:55:29 - More
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Time of Day: 0735  

Long-tailed Hermit -- Phaethornis superciliosus 1:56:00 - 1:56:21 Play 1:56:00 - More
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Time of Day: 0735  

NPR/NGS Radio Expeditions
5 Nov 1991

    Geography
  • Bolivia
    Santa Cruz
    Locality
  • Noel Kempff Mercado National Park; El Encanto camp
    Latitude/Longitude
  • -14.625   -60.69306
    Habitats
  • Rainforest
    Channels
  • Stereo
    Sampling Rate
  • 48kHz
    Bit Depth
  • 16-bit
    Recorders
    Microphones
    Accessories
    Equipment Note
  • Stereo=1

Bolivia
DAT # 2

Al Gentry Interview continues.
AG: I'm guessing 170 species here. Diversity hasn't gone down at all from Central Amazonia. That is surprising though it wasn't surprising because of what Ted had found out about birds.
(AG speaking in Spanish)
FX: Generator ambience and rustling newspaper
AC: You're surprised at finding so much diversity here. If there was anyone in the world who wouldn't be surprised by what they found here, in terms of plants, wouldn't it be you?
AG: Most people wouldn't even think about this area, people don't even know about it, doesn't even appear on maps. Just west of here....cerrado....
Generator ambi.
AC: Maybe you've discovered that the Amazon is bigger than people thought it was.
AG: in a sense, it's like some miles bigger....would have to explain why....rich soil, wetter here on this side.
Ted and Al re. lost newspapers - more rustling newspapers.

Tuesday morning -in truck headed from Los Fierros to EI Encanto. Ted and Al talk in front seat as drive. useful bed for talkover, not for in-the-clear.
{Note: this part with Ted is very much about sound, recording, birds etc. -less re. RAP - use for Pilot}

In the forest following Ted:
FX -walking ambi, forest ambi
Ted plays a warbling antbird. (good - can hear Ted turning tape recording on) -lots of flies circling....
**** flies, Ted playing tape back, birds respond -louder than at the beginning. Ted talking: Birds chattering then Ted says: "these woodquail are indicative of good forest. One of the things I am doing as I am walking along is rather than in every locality trying to find every species, I am trying to find indicators of really good undisturbed forest so that might be 30 or 40 species out of 400 that only occur in places that are undisturbed -and marbled woodquail is
one.
FX -walking along*** FX -Ted plays tape again
*** What I'm mainly trying to do when I get to a place like this -4-5 km in a morning -find every species I can find....document their occurrence by getting any small bit of tape I can find. will later be catalogued and put in a collection at the Library of Natural Sounds¿ ....In a good morning I might hear 200-240 species in an area like this. In a forest like this there might be 2,000 bird species
FX -walking along -Ted's sneakers squeaky
Ted does playbacks....Another thing I do is try to find flocks. Talks about woodpeckers drumming.
You probably hear about 4 or 5 sounds right now when there about 40 species singing. Tend to hear what is close. What I'm trying to do is listen a few hundred meters away for the unusual things that aren't close to
us.
[note: conversation re. ivory willed woodpecker]
FX: Playback -off and on of woodpecker. He thinks another male is invading his territory....Here he comes, there's the male and female .¿ ///stereo///Now they'll probably resume drumming. They don't recognize their own calls....will recognize birds in neighboring territories. Some of these birds have maintained these territories for 10 years.
[Note: use Ted in the studio talking about this]
Here he comes again

**** I can do that with any bird in the forest, I can bring them in within a few seconds ... just playback
AC: How did you learn that trick of calling them in?
TP: learned it as a kid in u.s.
(Note: should be good, but it's not -maybe use better answer from studio interview) Ted logs his observations onto tape deck 6:30 a.m. ¬- 11/5/91
walking along TP playback
{Note: Dub off good walking in the forest Ambi to get us from one place to another}
TP -another kind of flock that move through undergrowth instead of in canopy
*** TP playback -quite loud. This is another trick -can bring back entire flock. Jointly they defend. Most of the species hold a small territory. These birds whole large flock territory¿...¿This is the call in response to playback of the song -ant tanagers...usually when I playback, birds are very confused.... go about their days without concern for intruding flocks ....Does this disturb them....if they can't defend their foraging space then they're in big trouble. More playbacks.
*** FX -Good walking sounds here
TP: Spider monkeys (NO)
***playback ...another antbird (very LOUD) Hear monkeys too. (long, no conversation) Monkeys playback. This is a group of black spider monkeys ..... seem to be really responsive to playback. See they're looking at us -more than 200 feet away. A male is jumping up and down and shaking the branches trying to get us away. curacao hanging ... *** (playback) -monkeys chattering -loud flies.
(Note: unsure of how or why we would use spider monkeys .... is a very long section reo playbacks, not much good description of what seeing or hearing....use just for punctuation of a different sound of the jungle....does not have much to do with RAP or use of sound to identify species.. ....good flies though) Baby on its back, they're not real happy about us being here. (Ted off mic in here.) Monkeys are overhead waving branches and scare them away. The groups have several young males, females, one dominant male, one with a small infant on its back.
TP: (on mic) See why they're called spider monkeys. Playbacks good and loud. Branches tossed down. They're puzzled by playing back calls. Do respond to playback....throwing down branches¿¿¿ bothered by insects too.....spend most of time scratching. Not everyone comes in the forest and sees monkeys.
(Ted not quite as good here as earlier -sounds a little quieter and more tired) TP: The hardest birds to detect -up here in the canopy ¬playback -Probably half of the birds here live in the treetops. People spend time.... if don't know their voices, no way could i.d. birds ..... hearing new sounds all the time. If hear new song, would be unusual. Good to have headphones and a parabola, hear sounds couldn't usually hear.
See if we can bring this woodpecker in. Playback¿¿¿. loud woodpecker with flies. Sometimes in a dense canopy don't see the bird fly by. Often have to listen just for the wings. If outside of their territory, birds will only come up to edge of their territory ....maps territories.
**** What I try to do is arouse them all, get pairs all around, draw territories on a map. map counter-singing pairs. best census ever done.
FX -Ted is walking along thru the brush as he talks. "Mapping singing birds is the best way to do a census." The only way we will ever figure out how many individuals there are is by counts of singing birds -and of primates as well." (Note: interesting, but TP is kind of muttering along at a rather low level)
walking
TP: You were asking what is important to us. Species diversity is just one thing. It's nice to know something about the densities of birds in the forest. Many species but small populations. Have high diversity but low numbers of most.
(Note) This all looks like it would be interesting, but
sounds so monotone FX -maybe use this for quiet ambi under AC and just before TP turns on the Nagra for playback.
Ambi: quiet -listening, then walking on....distant birds. ....walking, no talking (over a minute)TP playback begins
TP: One of the hardest things is to concentrate on that outermost layer of sound. Tend to hear half dozen species calling within 50 feet away. Have to listen to those 200 feet away
Ambi: quiet listening in the forest
TP: Canopy is the hardest.
I'm hearing about....already this morning heard 80-90
species, and it sounds like it's a quiet morning.
Hummingbird....squeaks are distinctive....The canopy
species you have to do by sound....that's taken me
years. That's probably what I've spent most of my time
on....taping them, trying to see them, bringing them
in....one by one over the years have been trying to
figure out sounds and calls.
Another problem is that there are quite a few species
that mimic other species....
Playback (good) I'm trying to bring whole canopy forward - turquoise tanager....on and on and on of playback and low level i.ds by. TP

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