Anne Hilborn Profile picture
Mar 20, 2018 15 tweets 8 min read Read on X
First Up Tonight we have #16 seeded Belo Horizonte Marmoset vs. #1 Harar Hyena! #2018MMM
Despite it’s long neck and loping stride, the spotted hyena (Crocuta crocuta) is not a cross between a bear + dog as some people claim. The family (Hyaenidae) is more closely related to cats than the dogs. Spotted hyena range over much of Africa #2018MMM iucnredlist.org/details/5674/0
Black tufted marmosets (Callithrix penicillata) are small new world monkeys (about 1.5 stoats/350 g). They live in family groups of 4-14 individuals in central Brazil and forage for fruit, flowers, leaves, young stems, tree resin, and insects #2017MMM citeseerx.ist.psu.edu/viewdoc/downlo…
Outside of the walled city of Harar, Ethiopia, a hyena has spent the day resting, a beatific expression on her face. As the call for sunset prayer floats over the city, the hyena knows it's time to see a special man about some meat. #2017MMM
Hyenas are powerful predators but scavenge when they get the chance. Usually hyenas + humans leads to conflict, as most people are not keen on having large carnivores in close proximity to them or their livestock #2017MMM
But the situation in Harar is a bit different. People in the town tolerate hyenas roaming the streets as they eat the rubbish and help keep the city clean. In addition, the hyenas around Harar and a few “Hyena men’ have a special relationship. #2017MMM
The men feed the hyenas bits of meat, and there is a lot of physical contact that is unusual between humans and wild large carnivores. Feeding the hyenas is thought to have originated in the 19th century as a way of distracting the hyenas from preying on their livestock #2017MMM
A little distance away from the hyena, the black tufted marmoset is feeling a bit uneasy. It is drier here than in his home in Belo Horizonte (about 450 km north of Rio de Janeiro), and there are fewer trees that provide places to nest in safety #2017MMM
The sound of humans from Harar doesn’t bother him, he’s used to the din from the city park where he lives. Well, the shouts of human children on the weekend make his family retreat to quieter parts of the park, but right now human noise is a dim #2017MMM livescience.com/14817-monkeys-…
What does bother him is the lack of tall trees and the members of his family group to help look out for predators. His wild cousins are concerned with birds of prey but in Belo Horizonte the marmoset and his family have learned that feral cats are the biggest threat. #2018MMM
To survive, they nest in trees with smooth bark that cats can’t climb. Being in a tree with lots of branches is not ideal, and he’s looking for a branch on which to spend the night when he’s distracted by a line of tasty ants marching towards him #2017MMM search.proquest.com/docview/854572…
In the low light, the hyena spies something that looks edible on the end of the branch. She is used to snagging bits of meat off of sticks held in the hands or mouths of the hyena men. This looks like a big chunk of meat on a stick. She makes a lunge for the marmoset #2018MMM
There are no family members to make alarm calls to warn him. However he sees movement out of the corner of his eye and leaps higher in the tree, but the tree isn’t very tall. And the hyena is 181 stoats (40 kg) worth of mass and 3 feet high at the shoulder. #2018MMM
She stands on her hind legs, her long neck giving her the reach to grab the marmoset who desperately clings to the branches, the thorns making bloody shreds of the skin of his hands. But the strength of the hyena is irresistible, and she drags him out of the tree #2018MMM
HARAR HYENA TEARS APART BELO HORIZONTE MARMOSET!! #2018MMM

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More from @AnneWHilborn

Mar 29, 2018
NEXT UP: Second seed Cheetah (Acinonyx jubatus) vs third seed Crabeater Seal (Lobodon carcinophaga) #2018MMM
Last time the cheetah vanquished the aye aye leaving naught but a finger behind and the crabeater seal made a furry pancake out of jaguarundi. #2018MMM
Will the curse of the aye aye cripple the cheetah this round? How will the seal cope with a much larger less squashy cat? Are you sitting comfortably? Then let’s begin. #2018MMM
Read 17 tweets
Mar 27, 2018
NEXT UP: 3rd seeded Dimetrodon limbatus vs 7th seeded Pseudaelurus quadridentatus (aka Puff quaddy or Puffy) #2018MMM
This battle is a collaboration between @je_light & myself. #2018MMM
In R1 (seems so long ago, right?), Dimetrodon & Puff quaddy both took out extinct primates. Dimetrodon (early synapsid around ~300-260 mya in the Permian Period) shredded an exposed, & much smaller, Aegyptopithecus zeuxis (early catarrhine primate) #2018MMM
Read 24 tweets
Mar 23, 2018
NEXT UP: 2nd seeded Cheetah (Acinonyx jubatus) vs 10th seeded Aye Aye (Daubentonia madagascariensis) #2018MMM
In the last battles, the cheetah ate the dunnart and the aye aye unnerved the coatimundi so much it retreated. Our scene is once again the Serengeti plains and once again the (still) hungry cheetah is being followed by a researcher named Anne. Aye aye pic=Nick Garbutt #2018MMM
The sun is setting. Cheetahs are mostly active during the day and Anne had based much of her PhD fieldwork on the idea that they would stay put at night to avoid lions and hyenas. Whoo-ee was she wrong (a theme for her PhD). Turns out cheetahs can move a lot at night #2018MMM
Read 19 tweets
Mar 15, 2018
NEXT UP: Cheetah (Acinonyx jubatus) vs Fat-tailed Dunnart (Sminthopsis crassicaudata)! #2018MMM
Our battle takes place on the plains of the Serengeti, in Tanzania in East Africa. A mixture of open plains and woodlands, Serengeti National Park covers 15,000 km2, 5,700 square miles, or the area equivalent to millions of flatted stoats. #2018MMM #StoatsAsmeasurement
The Serengeti ecosystem is a stronghold for cheetahs in Tanzania, and @SerengetiCheeta has been monitoring them there since 1980. They estimate there are about 250-300 in the ecosystem, but that is a rough number since cheetah are hard to count. #2018MMM
Read 17 tweets

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