Sunday, June 12, 2011
Cracking the hyena code
I am thrilled to be spending this summer getting familiar with the hyenas I have been thinking, reading, talking, and writing about for the past year. Last semester, I spent a great deal of time reading through hyena notes back in Michigan. As we watch the hyenas in field, we record their behaviors into a digital voice recorder. Back at camp, we transcribe these notes into word documents that get sent back to MSU where they can be entered into our database and analyzed. These notes are written in a language all their own. Learning to decipher the rich behavior documented in the strings of acronyms that make up our notes is like learning to crack a code.
Last semester, grad students Sarah Jones, David Green and I trained undergraduate research assistants to “extract” certain behavioral data from this secret language and enter them into our database. This of course required that I learn to crack the code myself.
Both Sarah and David had already been out in the field. As they had already seen hyenas in action and transcribed their every move, it wasn’t so confusing to them to read pages and pages of notes like, “MOS t1 lk (food) MP, eb hb bo. ADON join MOS t3 bsh brt (food) MP, eb cc squeals.” In reading this, Sarah and David could imagine an interaction in which Morpheus (MOS) got annoyed with MoonPie (MP) as they were arguing over some scrap of meat. MoonPie got the message and did a bunch of submissive stuff, pulling her ears back (eb), head-bobbing (hb), and backing off from the situation (bo). But clearly this wasn’t enough because Morpheus then got seriously pissed and bit and shook her (bsh). Adonis (ADON), standing nearby, thought this was a just reprimand…or maybe just wanted to use the opportunity to reassert her own rank… and joined in with Morpheus. This time, MoonPie squealed and crawled submissively on the ground (cc).
Reading our hyena notes before actually seeing a live hyena made for some funny situations. Sarah had to demonstrate a “defensive parry” for me, David had to act like a male hyena anxiously “approach-avoiding” a female he is interesting in, and everyone in the lab had to try out their impression of a hyena whoop for me. Over time, I began to be able to imagine what the hyenas might be acting like as I was reading the notes. Some of the individuals even began to feel familiar. It some sessions, I could feel their personalities jumping off the page as I read the code like a soap opera.
But every once and a while, it would come out that I had a little misunderstanding about one of many components of the hyena code. I have become known in the lab for one of these realizations. One day as I was reading some hyena notes, imagining what the scene must look like, and checking over the work one of our undergraduates had done. I announced to everyone working in the lab, “I love it when everyone oos!” They looked at me a little confused. “Um, what do you mean?” Sarah asked. “You know, it often happens at the end of a session. Everyone oooooos and then the session ends,” I answered. I had been imagining that an “oo” was one of the hyenas’ charismatic vocalizations. It made sense. I often read “everyone oos” and then the researchers left the area. This must be a vocalization the hyenas do when they are about to leave or move on. I was excited to get to Africa and finally hear what one of these “oos” sounds like! Everyone in the lab starting cracking up at me. It turns out “oos” actually stands for “out of sight.” As Dave informed me, “All the observers leave because there are no hyenas around! That’s why the session ends!”
As I predicted, some of the hyena behaviors are just as I was imagining… and some are very different. Although learning the hyena code before ever seeing a hyena is the opposite of what most members of our lab do, it was useful for me to see what the learning process must be like for all the undergraduates who help us extract behavioral data without having the opportunity to see a hyena in the flesh. Needless to say, it is great to be out here seeing what the hyena code actually looks like when acted out live by the cast of characters.
Thursday, June 9, 2011
That was my May in the Mara
Monday, May 30, 2011
Did Someone Say Provisioning?
Seconds after bringing the warthog back to the communal den, nearly every cub underground (~16 in total) emerged and tried their best to get a scrap. Unfortunately for them, Clovis has many older subadults still around in the clan who quickly came to mooch off of their mom’s steal, and prevent any others from enjoying even the slightest little bit.
During the entire ordeal, Clovis really tried her best to ensure that only her kin were getting the most from this carcass, but every now and then you’d see a non-related cub sneak in and get a piece. For some of the younger cubs, the act of getting a tiny morsel away from Clovis was almost more exciting than the thought of eating it in the end!
Wednesday, May 18, 2011
Population explosion?

The Talek West clan is the largest it has ever been right now, after a winter-long baby boom. We suspect the recent baby boom was fueled by two years of feasting, not only on the usual suite of wild herbivores present in the Mara, but also on cattle that died during the 2008-2009 drought here in Kenya.
Friday, April 29, 2011
The queen is dead.

On the night of 12 April, 2011, the alpha female of the Talek West clan, Murphy, was killed near the den, along with her constant male escort, Fozzie. Murphy had been alpha female since her mother, Bracket Shoulder, died on May 29, 1999.
At that time, Murphy was 3 years old, and the throne by rights should have passed to her younger sister, Carson; that is, spotted hyenas exhibit a monkey-like pattern of youngest ascendancy, in which the youngest offspring comes to outrank its older sibs when the mother takes its side in disputes with the older offspring. However, Carson was only 14 months old when Murphy died, and she was clearly unable to hold her own against Murphy’s greater size and strength without help from her mom. Murphy has reigned unchallenged since then. But on 12 April 2011, it appears that Murphy and Fozzie were in the wrong place at the wrong time, and they paid a terrible price.
The Talek West hyenas had been denning at what we call the Plantation Den, which is situated along the north side of the Talek River, inside a small fenced tree plantation managed by local Masai. The Masai living closest to the den reported that lions had killed a zebra that night in the riverbed near the den, and the Masai heard lots of hyena vocalizations, suggesting that the lions and hyenas had engaged in a major fight. The fight might have been over the zebra carcass, or the hyenas may simply have been nervous to have so many lions so close to their den. But in any case Murphy and Fozzie were found dead inside the plantation fence the following morning, each having sustained multiple puncture and slash wounds.
Being somewhat jaded after working here for many years, I initially assumed that Murphy and Fozzie might actually have been killed by local Masai; after all, we have lost multiple other Talek hyenas to spearing by local people inside that same plantation fence over the years. However, the day after Murphy and Fozzie died, my research assistant Brian Lunardi sent our askaris to make inquiries of the Masai who lived nearest the plantation, and the askaris came away from those interviews convinced that lions were the true culprits. Furthermore the pattern of wounding on the bodies of the dead hyenas was most consistent with lion-induced mortality. It is certainly easy to imagine how lions might corner hyenas against the fence, and kill them there. As Murphy and Fozzie were inseparable in recent years, it came as no surprise to find their bodies only 30 meters apart from one another.
During the 12 years of her reign as alpha female, Murphy gave birth to many offspring, all named after gods and goddesses. Her sons (Bacchus, Hermes and many others) have all dispersed to neighboring clans. But surviving her in the Talek West clan are her adult daughters Artemis, Adonis, Morpheus, Pan, Helios, Loki and Juno. When she died, Murphy left a 3-month old cub at the den, but that cub has already vanished. One of Murphy’s youngest adult twin daughters, Loki and Juno, should now inherit the throne. As Juno was the dominant cub within that twin litter, we expect she will become the new alpha female, but we have not yet seen the two sisters interact aggressively since Murphy died, so we don’t know yet what will happen. But in any case, we hope the new queen has a long and successful reign as alpha female.
Tuesday, April 26, 2011
Welcome to the world!



Tracy and Brian and I were driving home from a foray this morning into the territory of the Mara River clan, when we stumbled upon a female giraffe standing out in the middle of a hug tall-grass plain all by herself. Or so we thought until we noticed a wee head with huge ears poking out of the grass at her feet. This female giraffe had just given birth a couple of minutes earlier; the afterbirth was still emerging, the baby was coated in amniotic fluid, and it couldn't yet stand up. The mother kept scanning the horizon as though on the lookout for potential danger to her newborn. She repeatedly switched between scanning and nudging her infant as though to encourage it to get up. As occurs in many species of mammals, it appeared that this female had given birth at a place and time of day when her baby would face the fewest risks. Although the Mara is teeming with large carnivores that would happily take advantage of a vulnerable infant like this one, none were about on this plain at 9:30 this morning.
We were all thrilled and fascinated to be so privileged as to witness this initial interaction of a newborn giraffe with its world, so we stuck around and watched for awhile. The baby tried several times to stand, but kept tumbling back into the grass at its mother's feet before it finally made it up onto its very wobbly legs. The mother promptly began licking the amniotic fluid off the calf, but that was apparently just too much for it, and the baby tumbled back into the grass again. Finally, the calf made it to its feet again, and this time seemed a bit steadier.
After standing against its mothers' forelegs for a few minutes, the calf began nosing around until, after several minutes, it finally stumbled upon the mothers' teats. It appeared to take several minutes of suckling (quite noisily!) for the mother's milk to start flowing, but when we drove away the calf was happily nursing below it's mother's belly.
Sunday, April 24, 2011
31 March 2011...still a bit late

Serena Camp
20 March 2011
For example after a day of reading field protocols and some other various forms of literature, I found myself unable to pull my view from a small toad. At around 8pm, a termite hatch had begun and seemed destine to cause some annoyance during what would soon be our dinner (the other aspect of camp that I currently most look forward too...and even in the face of events just short of apocalyptic this likely won't change; the food is great and I like to eat.)
Anyway, the toad also arriving at the table for dinner, began a tireless effort to eat nearly a dozen or so of the flying termites, which were about 1/15 the size of the toad. In certain order and with some patience this toad collected termites that having about as much grace as a whirly-gig (falling maple tree seeds) inevitably were stuck buzzing and crawling around on the tarp floor. In their struggle to evade the toad I noticed that some termites were shedding their wings. I do not know if this is to facilitate dispersal or mating or some other phenomenon. Either way their success this particular night fell short by the efforts of the toad. Although I can't speak to its comfort, the fattened toad slipped off into the dark, appetite satiated, sometime during which I was lost in my own gorging of a cabbage dish, chipotte, and curry (peppers, onions, tomatoes, garlic, sweet potatoes, and curry sauce).
After dinner, more tired of reading than tired I made my way to my tent where I was lulled to sleep by the sound of lion roars and hyena whoops. Today I awoke to a leopard growling in camp (they make this chugging kind of sawing sound), but there was again no chance of going into the field because of rain. However, provided a brief spell of sunlight I have been able to write about my time the past few days at Serena Camp (located in the Masai Mara).