Sunday, March 16, 2008

Online from Fongoli village!


Yes, believe it or not, I am online direct from Fongoli village!

This means that I can now connect via satellite with my Primate Behavior distance education course for teleconferences, etc.

I must say I have been skeptical - as well as frustrated! But, the folks at Center for Distance Ed at ISU - and my T.A., Michael McCoy - kept after me to try again. Finally, with the help of Wally Camara, one of my field assistants, we got connected this morning. He spent about 20 minutes moving around in the sun (it was already in the 90's at 10 a.m. our time), trying to get a signal while I directed him from the computer side of things. Of course, it was before 5 a.m. in Ames, Iowa when I got on the internet, so there was no one awake to share in the excitement, tell me "I told you so", etc.

The next step is to try and transmit from out in the field with the chimps. I'd like to find a computer setup that is a little smaller (lighter!) though - the chimps have been nesting about 5 miles from here, and it is a long walk even without extra baggage - especially after being out in the heat for 15 hours! (The other day I was out for 17 hours after K.L. decided to eat Piliostigma seeds until 9:20 p.m.!!).

On another note, here is a link to the National Geographic article on the Fongoli chimps. It will be coming out in the April issue, but you can read it online and view some videos. You can also read about the photographers' experiences (Frans Lanting and Chris Ekstrom).

http://ngm.nationalgeographic.com/2008/04/chimps-with-spears/

Monday, March 10, 2008

Baboon Feast







February 1st 2008. Guest post by Maja Gaspersic-Cisse

6h40. Five of us arrive to the Djendji plateau above the water source. Chimps spent the last night over there. We hear pant-hoots. And baboon barks. Wally, Elhadji, and Fiona stay to examine the nests, Djannny (Dondo Kante alias DK) and I search for chimps.

6h52: We spot six individuals on a »Kijeno« (Pterocarpus sp.) tree; I think they're just eating its flowers as they often do lately. Not! Something else is going on. (See photo of Karamoko, right, with prey in hand!).

After a moment, they're out of sight, but we hear a lot of screams and movements. Fifteen minutes after the theft we find them in another patch of woodland at the edge of the plateau. Tia is on a “Kijeno” tree, eating its flowers, David below with a piece of meat. No one interferes. DK sees Bandit and KL, each with a piece of carcass. (Lupin, below, has stolen Karamoko's capture!)

Almost an hour later David still chews on that piece of meat, he mixes it with a bundle of grass blades. Tia sits besides him, but he doesn’t even look at her. Then he leaves that chunk on the ground and chews foliage. And Tia takes the prey. Eventually David returns to her and literally begs for a piece (with outstretched hand), but now she ignores him. She walks away with it. Baboons are still around. Still screaming...disturbed? (see David, below right, with head of baboon visible).

Later – 10h30: Bandit sits right besides Farafa and stares at her, while she eats the carcass. The whole group then moves to the water-source.

A few steps from the tiny source Fanta plays with the remaining piece of monkey. It’s mostly fur and, for a second, she puts it around her head like a necklace. When she climbs up the giant rock, she puts the piece between her thigh and her belly and carries it higher upslope. At 11h45 she appears again, still with that chunk of prey and again carrying it the same way.

A minute later the furry piece is not seen. Fanta plays alone, with one hand holding to a vine, dangling, and with three limbs slapping the trunk of a Ficus tree. And she tries to scare use, hanging above us, shaking branches and swaying in child-like displays. Fiona joins us and is pretty excited when Fanta makes an elaborate day nest above us…

Tuesday, March 4, 2008

Problems for Fongoli chimps

At this time of year at Fongoli the herds of sheep arrive. This began in 2006. From about the middle to the end of the dry season (January through May), young Puhlar men who tend herds of sheep filter into the area from up north. Northern Senegal, which is considered part of the Sahel (sub-Saharan Desert region), has been basically denuded of vegetation, partly through overgrazing. It appears that the same thing may happen here if the sheep herds continue to range in the area!
The first year the herds appeared, the number of livestock did not seem to be too problematic. Rather, the manner in which they were tended was distressing. The shepherds cut limbs of trees to provide browse for their sheep, but they also cut entire living trees as well, rather than just branches from these trees! The first year, it seemed that they mainly cut Acacia trees. While there are only a number of tree species that provide any sort of browse at this time of year, Acacia trees are also protected by thorns, so it was not surprising that this was the species cut down rather than trimmed. One of the reasons I chose to begin my research at Fongoli and not within the nearby Niokolo Koba National Park was that I was fascinated by the fact that chimpanzees were living alongside humans – in an area where most of the other forms of wildlife had gone extinct. To this end, I try and observe the dynamic between humans and chimpanzees rather than imposing a sort of a National Park mentality on the place. At some point, however, human encroachment does seriously endanger the existence of the entire chimpanzee community (as well as population), and I have to decide as to what steps can and should be taken.

Last year, however, my project manager Stephanie Bogart (also my Ph.D. student in Ecology and Evolutionary Biology at Iowa State) reported that the issue of the sheep herds was even more problematic. Their number had increased, and they were allowed to camp near the village, thus encouraging their use of the chimpanzees’ range. Stephanie and Johnny explained their concerns at a couple of dinners they put together for the people of Fongoli and of Petit Oubadji, another village at the margins of the Fongoli chimps’ range. They hoped to convince the elders of Djendji next – the largest village within the home range of the chimps, whose leader is the person that should be asked for permission regarding any mode of land use (including chimp research). At about that time, however, the herds moved back up north, and we knew we would have to deal with the issue this year.

This year, the sheep herds are many, and the shepherds are cutting down trees again, as well as pruning limbs for browse. Some of the trees they have cut include hardwoods that may be hundreds of years old, and I measured the diameter of one to be almost a meter wide. Additionally, the reaction of the chimps to the herdsmen indicates that they have had bad experiences with them. In one case, a party of chimps was happily feeding in a Kukua tree when a herdsman approached. The chimps fled from the tree, rapidly left the area entirely, and were nervous for the rest of the day. In another case, some of the chimps had already made their nests one evening when we heard the sounds of the shepherds herding their flocks. Most chimps fled rapidly and, although I think they ended up nesting only about 50-100 meters away from their original spot, their behavior indicated they were more afraid of these people than they are of farmers and others who live in the area and who they encounter out “en brousse” (in the bush). Usually, the chimps simply sit silently until a person moves past, or they will divert their travel path, etc. It is unusual that we see such radical flight from them.

The first thing we have done is to meet with the village leader of Djendji. Two years ago, he and I entered into an official agreement via the authorities of the district so that together we are able to halt destruction of the chimpanzees’ habitat by outsiders (i.e., those who are newly immigrated to the area and who haven’t grown up here farming, etc., for their whole lives). We recently did this in the case of Maragoundi. Maragoundi is the site of a former village – in fact, it is where my field assistant and the elder of Fongoli village, Mboule Camara was born and raised. This year was the first that anyone who has lived in the area can remember that Maragoundi ravine has been cut for planting crops (by someone living in Kedougou, looking for land). With our authority, we were able to stop the person from farming this area, although the level of destruction at Maragoundi is great. Normally, we notice that a forested area has been marked for farming, and we are able to stop the process before a significant amount of destruction has occurred. In this case, however, the person threw a corvĂ©, which is like a big planting party – and they rapidly cleared at least a hectare (100 by 100 meters) before we were able to stop them. This included cutting down some very large Taba trees, which are one of the few species of evergreen trees you find at Fongoli. Clearly our retroactive methods need to be revised and/or supplemented with better proactive methods than we’ve used this far.

But, back to the sheep. The village leader informed us that he does not like the fact that the shepherds are destroying the habitat he grew up in – and the one he will leave to his grandchildren and great-grandchildren and so on. However, he also notes that other village leaders allow these shepherds to camp near their villages – it is hard to take a stand without a concerted effort. Additionally, culturally, it is very difficult to refuse hospitality to someone. The people here are some of the most welcoming people I have ever met anywhere. This generosity adds to the problem of refusing to allow the temporary migration of the herds into the region.
We are now exploring the possibility of taking the protection of the area to the next level. On paper, this area is protected. There are 3-4 men at Djendji village whose responsibility it to watch for any illegal activities such as the cutting of particular types of trees. However, they do not have any documentation giving them this authority so that it is difficult for them to actually halt such activities. This seems to be a problem that we can solve fairly quickly. Probably an even greater problem, however, is that of time and money. These men, like everyone else who lives in the region, work very hard to make ends meet. Rural Senegal, especially, is impoverished, and the yearly income of an average Senegalese person is less than U.S. $1,000!! One way that we hope to remedy this issue is to provide the “rangers” with some sort of stipend, as well as a uniform that helps give them the authority they need to enforce the laws. This is one of the goals of our non-profit organization, Neighbor Ape (see posting at right of webpage).

At this time, we are awaiting the return of a Forestry official from Dakar. We have made arrangements for him to come out and view the habitat destruction and, hopefully, make some headway in our discussions with the herdsmen and the leaders of the villages in the area. It will likely be a slow process, but we hope to have this issue resolved before next year’s dry season, at the very least.

Finally, on the subject of habitat conservation, we recently came to find out that a French-Italian concession has started a project nearby that entails introducing wildlife to the area for hunting. While this might sound like an opportunity in one regard – bringing back some species that have been locally extinct – I can also imagine issues for the chimpanzees. Given that the area will be adjacent to the Fongoli chimps’ home range – although perhaps encompassing the overlap area between them and the neighboring chimp community – the fact that this large are will be FENCED almost certainly will be problematic for chimpanzee dispersal between communities. This is a threat to the long-term viability of the chimpanzee population of Senegal and one that we will also hopefully deal with via our non-profit organization and with the assistance of those interested in conserving Fongoli chimpanzees, such as Chris Eckstrom and Frans Lanting (National Geographic photographers), who are helping facilitate conversations about such threats with leaders of Conservation International.
As the population of Kedougou continues to grow, a continued push to farm areas of the Fongoli chimps' range 
will no doubt affect the community ultimately.  The photo here was taken by Julie Lesnik, PhD student at U Michigan, as I was following the chimps across a recently cleared field.

Monday, February 18, 2008

Fongoli chimps on Today Show, featured in NOVA special 'Ape Genius'


Here is a link to the Today Show segment that previews the NOVA/National Geographic film that aired on Tuesday, February 18, entitled, "Ape Genius". Dr. Victoria Horner and I discuss the film...

http://today.msnbc.msn.com/id/21134540/vp/23220685#23220685

You can watch the Ape Genius video, chapter by chapter if you follow this link:

http://www.pbs.org/wgbh/nova/apegenius/program.html

The Fongoli chimps are featured specifically in Chapters 1 & 2, although you will recognize clips of them and the field site throughout the video.

Wednesday, February 13, 2008

Big day at the cave!

February 10, 2008.

Today was an exciting day with the chimps because the young female Tumbo was in estrus, so a large party was in attendance. In addition to 8 adult males, a number of other females, along with their offspring joined the group. This is typical when a female is in estrus - it is a very social event, no matter who you are!

It was almost comical to watch 8 adult males keep an eye on Tumbo's every move - and to change their own travel trajectories to match hers! Meanwhile, Tumbo nonchalantly continues on her way, stopping frequently to eat (as is typical for her - I swear she eats more than any chimp I know!), seemingly without a care in the world for these 8 guys following her around. She does pay them a bit of attention at times, if you get my drift, but I wanted to write today about something else the males were very interested in.

One thing that makes the Fongoli chimps unique, compared to chimpanzee communities that have been studied elsewhere, is that they use caves for resting, feeding and socializing during the hottest times of the year - when these caves are cooler than the surrounding environments. Some of thes caves are more like rock shelters. There are also what we call 'dirt caves', which have been carved out by animals, under the banks of streambeds in the area.

Today, the large party (of about 27 individuals) set off for one of these small, dirt caves, which was located along the Kerouani stream. All of the streams are dry by this time of year. Diouf seemed to lead the way, and throughout the afternoon, as various tussles between males ensued, Diouf always seemed to remain near the cave and would jump back in first chance he got after a minimal amount of participation in a fight or two.

The highest-ranking male in the party, Yopogon (see photo here, taken by Maja Gaspersic Cisse in Dec. 2007), who is actually 2nd-highest ranking male behind Foudouko (who we haven't seen in over a month) didn't seem to be able to bully anyone out of the cave so that he could go in. Dominance interactions over females in estrus are much more indicative of the male dominance hierarchy than are interactions by males over food or space.

In this case, the chimps were eating soil from this particular cave (we call it 'geophagy'). Chimps at all long-term study sites have been observed to exhibit this behavior. Gorillas are better known for the behavior, and other primates exhibit it extensively as well - colobus monkeys, for example. It appears to provide some minerals to the diet, but in colobus monkeys, similar behavior (charcoal eating) also seems to detoxify some of the plants they consume.

In addition to being very much interested in eating soil (which was really hard for me to imagine - the temperatures were well into the 90's, and as far as I know, this chimp party did not drink on this day. I can't imagine how they did it - it made my mouth dry to think about it!), the males were interested in being able to lounge in the cave as well. Being a small cave, only about 3 males could fit comfortably in it. This caused more of a ruckus than having access to Tumbo did (although, granted, she is not quite at that stage of her estrous period where she is most 'attractive' to males)!

Yopogon proceeded to display at length up, over and around the cave in an attempt to supplant one of the other - lower-ranking! - males from it. This just wasn't working. They ignored his attempts, often reassuring one another as he stamped by. Finally, he appeared to take his frustrations out on Bilbo, who was not actually in the cave at the time but who was one of the first males to go in and eat. Bilbo did not take kindly to Yopogon's threats - I couldn't actually see if he slapped him, but it sounded like he did. A chase ensued and, as it frequently does, ended up high in the trees.

With Bilbo screaming in rage initially, and Yopogon finally screaming in fear, the rest of the party let loose with VERY loud WRAAAAHH barks, which are given during such aggression. You might think of them as being something along the lines of, "Stop it! Cut it out! Things have gotten out of hand!". They REALLY got upset as Bilbo and Yopogon actually grappled high in the trees, about 15 meters (45 feet, I believe) off the ground. At this point, I was standing in the midst of the hollering group, trying to see exactly what was going on.

The next thing I knew, Yopogon had grabbed a limb that would not support his weight, in an effort to elude Bilbo. The limb tore from the tree, and Yopogon plummeted about 12 meters (about 35 feet) to the ground!!! You can imagine the uproar!

At this point, I was afraid that what had probably happened to Mamadou (see post below) would be what I would then see with Yopogon.

Fortunately, he doesn't seem to have been seriously hurt and, actually, the fight continued along the ground for some time - over a hill and out of my sight.

Yopogon finally made his way back to the cave. When I turned back to look there immediately after the fall, I saw that a few females had taken advantage of the situation and had run inside to grab some clay. Diouf, who also didn't stray far from the cave, swaggered a little and chased them back, and went back to dozing and eating there for another couple of hours. Yopogon groomed with various males, trying to make up for the hurt feelings, etc., that had come out of all the aggression. I finally saw that he got as close as being able to lie at the lip of the cave. A very exciting day for me but one that is fairly typical for chimps - especially when you have a community, like Fongoli, that is characterized by so many adult males. All's well that ends well, I suppose...

Friday, February 1, 2008

Baboons, baboons, baboons...Jan 31, 2008


You have to love baboons.


They make somewhat rowdy chimpanzees (that’s what some people think anyway) look absolutely tranquil by comparison. There is at least one troop of baboons that shares the home range of the Fongoli chimps. There are at least 100 individuals in this troop, and if they are like the baboons studied by Martin Sharman 25 or so years ago in Niokolo Koba National Park here in Senegal, they also exhibit a fission-fusion social structure. Unlike the “typical” chimp fission-fusion social structure, however, these monkeys come back together almost every night to a common sleeping site. (More about the apparently ‘atypical’ fission-fusion behavior of Fongoli chimps in another blog!).


At any rate, you can imagine that it is difficult for a troop of 100 or so baboons to hide – and they might want to do so in the Fongoli area, as they are eaten by some of the groups of people living here. Well, the baboons seem to have considered that a foregone solution, and a baboon troop is one of the noisiest bunches of animals you will ever meet – at least in my opinion (with my apologies to the many baboon researchers, should they ever read and take offense at this!).


Yesterday, I followed the party of 15 or so chimps I was with from their nesting site at what we call “Point d’eau” – it is the one permanent water source in their home range at the peak of the dry season (still a month or two away) aside from the Gambia River. After they spent some time out in the woodland, feeding on Keno flowers, they meandered back to the ravine here, which is a small patch of gallery forest where the water hole is situated at the very bottom.The large, noisy troop of baboons decided to drink here as well, and chaos ensued, as it often does when chimps and baboons meet at Fongoli (although one of my project managers has also seen play between young baboons and chimps, as they have at other research sites). Baboons give warning barks (as in predator alarms) to chimps, and there are chases back and forth among the species. It was hard for me to see what was going on in this particular case because I was sitting up the slope some, watching Karamoko (#9 male) sleep for what seemed like hours. Plus, the baboons are afraid of us, while the chimps are not, so often I just get a view of baboons hastily retreating.


In one case last year, the chimp party I was following definitely took advantage of my presence to further chase the baboons back. I was thinking to myself how impressive “our” chimps were although they were outnumbered by these pesky monkeys, when I saw three chimp males run screaming from an adult male baboon! Oh well. To give them credit, baboons do have massive canines, and an adult male looks almost as big as a chimp, although he doesn’t weigh nearly as much…


Another time I did get a better look at baboon and chimp interactions. In this case, a number of the Fongoli male chimps chased back baboons from an area in which they had been foraging. According to what I’ve read by Sharman, baboons in Senegal and chimps feed on many of the same foods (There really hasn’t been much research done on these baboons, Guinea baboons or Papio hamadryas papio, for all you budding primatologists – although there is a project underway by Julia Fisher, a German primatologist). Anyway, this particular encounter involved a subadult male we called ‘Nyegi’ (which means something like “naughty boy” in the Bedik language; this was because he used to follow researchers – especially male ones – and warning bark at us). Nyegi was giving his all in trying to chase baboons away. He threw a number of very large rocks at them. The chimps here throw rocks a lot in their displays, and these are not small stones – usually it takes me two hands to pick one up (see photo of Diouf shot by National Geographic photographer I posted here at left)! The baboons screamed appropriately, as they tend to do, which must have been very satisfying for Nyegi. Sadly, we haven’t seen Nyegi since last spring and he must have almost certainly died. He was a young adult, probably 15 years of age, and we were all excited to see him enter into the adult male hierarchy but never got to see it. Male chimpanzees almost never leave the community into which they were born, so we have reluctantly classified Nyegi as deceased.

To end this blog on an uplifting note though, at the end of the day, the chimpanzee party and baboons ended up sleeping in the same little strip of gallery forest above the water source. I don’t know how much sleep the chimps got – having slept near baboons myself while working in the national park - there always seems to be someone awake and screaming. It seemed like a good ending, though, so I'll imagine that all slept peacefully.

Sunday, January 27, 2008

January 24, 2008 – BANDIT AND THE HONEYGUIDE

Today I was initially with a small party of chimps – Bandit (male #10 or 11 in hierarchy), K.L. (#3) and Bo (adolescent male) – and followed Bandit for most of the day as my focal subject. He is an older male (I'd guess over 30) and one that I think was high-ranking until just a few years ago. He was also one of the lower-ranking, older males that Margie Robinson (a former Master’s student of mine) found spent the most time affiliating with juvenile chimps at Fongoli. Her Master’s thesis research questioned whether these lower-ranking, older males could be affiliating with females’ offspring as a form of mating strategy (like “friendship” in baboons and the work of Shirley Strum). Hopefully, with data on the genetic relatedness of the Fongoli chimps (Fiona is currently collecting fecal samples for that purpose), we could also address whether these males might have sired the offspring with which they were affiliating.

But, I was going to describe the incident that happened today with the honeyguide (and Bandit). A honeyguide is a type of bird (the genus and species are Indicator indicator, in case you’re interested - and if that gives you any indication as to what the bird does) that is known for guiding humans and other animals, like honey badgers, to honey. Humans characteristically leave a bit of honeycomb stuck onto a twig for the bird after it guides them to a hive. I was familiar with these birds after having lived in Kenya for a couple of years, and I’ve been solicited by honeyguides here at Fongoli several times (they have a characteristic chatter when they attempt to lead something to a hive). I’ve always wondered if they ever tried to lead the chimps to honey, but I have never seen this.

On this day, at about 8:00 a.m., I was sitting and watching Bandit eat yet another Strychnos fruit (they actually wadge [think of a chaw of tobacco, without the spitting] the fruit pulp, then spit it out; the seeds are poisonous – thus the genus name, Strychnos). A honeyguide bird came and chattered at me for just a few minutes, but I wasn’t very responsive, so it then actually flew over to where Bandit was sitting and chattered at him. Now, I thought, I would get to see what would happen! In fact, Bandit appeared to be more interested in eating his fruit pulp because after a minute, he threatened the bird away with a shake of his arm (raised-arm threat if you want to get technical)!

At about this time, K.L. and Bo appear, and all three of these guys begin traveling more closely together, stopping and eating the Strychnos fruit, sometimes wadging it with dead leaves (which I hadn’t seen before, although we had seen them eating dry twigs with meat…). Anyway, the honeyguide decides to give K.L. a try and proceeds to follow him more closely and chatter for almost another hour. Maybe K.L. didn’t threaten the bird away like Bandit did. It even followed him up to the termite mound where Bandit was fishing. The honeyguide finally gave up, and I didn’t get my answer as to whether chimps follow these birds to honey – but I have seen that they are solicited by them at any rate. I assume that the honeyguides don’t do this to just any animal – that there must be some precedent in the past (not necessarily with this particular bird but with this honeyguide species in general…?) that incites this behavior.

At around noon, the party of chimps moved over to the waterhole near Djendji and met up with Lucille, her juvenile male Lex (about 4 years old), and her new baby, Sunkaro (a few months old), along with Frito, Farafa’s juvenile son. Farafa and Fanta (Farafa's infant daughter) showed up a little later. It was the first time I’ve seen Sunkaro, and she is a beautiful baby (granted, I’m a little biased). I saw, as my field assistants noted, that Lex is still being carried by Lucille on her back, even as she carries Sunkaro on her belly! This isn’t very common – or recommended! I was surprised, actually, that Lucille had another infant so quickly, but I was going on the fact that the average interbirth interval (time between births of a female’s offspring) at other chimps sites is five years, and that I expected that it might be even longer at Fongoli, given that I think this is a pretty harsh environment. It must be difficult to carry two “babies”, like that, especially as the dry season progresses. But, more on Lucille and her family – and what happens with Lex, who appears to feel the need to still be carried on another day…