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https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/1641580931766-X34LNXPWHLEMD86XD8PG/unsplash-image-zP1rH8NjjUo.jpg Research - The Nimba Mountains Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/1643825675807-25RBI7XDGUM3IPPHACM2/unsplash-image-rJ5vHo8gr2U.jpg Research https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/a39194e7-ca6f-41ed-b9bc-2534f274b8ef/P1090443.jpg Research - What drives chimpanzee tool use & culture? Chimpanzees use tools in a variety of context - just like we do! Nut cracking, termite fishing and ant dipping are examples of cultural tool use variants. Yet, not all chimpanzee communities use the same types of tools. We examined the influence of environmental factors on tool use among the Seringbara chimpanzees in the Nimba Mountains, where nut cracking and termite fishing are absent, but ant dipping is present. We tested two hypotheses. The opportunity hypothesis states that encounter rates with nuts, insects or tools explain tool use patterns. The necessity hypothesis states that tool use is a response to food scarcity. Our findings supported the opportunity hypothesis: nut trees and termite mounds were rare and peripheral to the chimpanzees’ range, whereas army ants were abundant and widespread. This highlights the importance of considering environmental conditions in explaining tool use by wild chimpanzees and emphasize the interplay between environment and culture. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/e582d3e2-3fa0-43a5-b5ea-ed9e07d3519a/Bonobo_Koops2.jpg Research - Chimpanzees and bonobos: What explains the difference in tool use? Chimpanzees and bonobos are our closest living relatives. Whereas chimpanzees are renowned for their tool use, bonobos use few tools and none in foraging. We investigated whether extrinsic (ecological and social opportunities) or intrinsic (predispositions) differences explain this contrast by comparing chimpanzees at Kalinzu (Uganda) and bonobos at Wamba (DRC). We assessed ecological opportunities based on availability of resources requiring tool use. We also examined potential opportunities for social learning in immature apes. Lastly, we investigated predispositions for tool use by measuring object manipulation and object play. We found that extrinsic opportunities did not explain the tool use difference, whereas intrinsic predispositions did. Young chimpanzees manipulated and played more with objects than young bonobos. Our findings suggest that selection for object interest likely also played an important role in the evolution of hominin tool use. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/1da48dba-0264-4478-8d78-fa925e2fa5a6/P1100687.JPG Research - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/d5b23d0f-383f-4778-bbbc-beb5274abc67/Bossou+chimpanzee+nut+cracking+-+K.+Koops.jpg Research - Tool use & culture We study how, and why, apes and humans develop their cultural tool use skills. We investigate the evolutionary drivers of technology, as well as the developmental process of acquiring tool use skills. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/452da2fd-40db-47d5-94e7-a00d5d6ac749/Bonobo_Koops7.jpg Research - Behaviour & ecology We study the behaviour and ecology of wild apes. Research topics include sociality, foraging and communication. We investigate the evolutionary origins and ecological drivers of their behaviour. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/d5c61b08-3e5c-4fd2-88dc-fc1d6ad10ecf/Seringbara+chimpanzee+3+-+K.+Koops.jpg Research - Research & conservation We investigate how wild chimpanzees utilize their environment. We employ genetic censusing, habit suitability modeling, and camera trapping. Our research helps to inform conservation strategies. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/40d9fd00-ed1e-4ba8-89b2-4bc77ec281cc/SNF_logo_standard_office_color_pos_e.png Research - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/e6cc7b5c-e017-42c2-8668-8db174456d76/Bonobo_Koops1.JPG Research https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/25fcad18-a763-4b4c-86c3-a5411176c1f5/IMG_1136.jpg Research https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/40d9fd00-ed1e-4ba8-89b2-4bc77ec281cc/SNF_logo_standard_office_color_pos_e.png Research - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.apegroup-uzh.com/publications daily 0.75 2026-03-31 https://www.apegroup-uzh.com/home daily 1.0 2024-02-14 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/1641418726295-4PDLI2DFCSRZF91IU4G3/Nimba+%28Mt+Leclerc%29.jpg Home https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/1641418894941-HCAEW6S4NUIF107UT1A8/Koops_Kuro.JPG Home https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/1644598627053-LGNWWM7WRSFJFU9XF0PZ/unsplash-image-n5_TxzcewEc.jpg Home https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/319f1971-f2b1-45ef-96ec-e4d4f3730e4b/P1080797.JPG Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/e20e1524-9493-4239-bf1d-9e68b024a897/Bonobo_Koops13.JPG Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/fc552b8b-b258-4b5b-b677-404e999145e9/Termite+fishing.jpg Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/feba16de-47bd-4f55-a121-92ece3247ce3/Algae+scoop_K+Koops.jpg Home - An evolutionary battle unfolding underground We are driven by the thrill of discovering previously unknown mechanisms that explain why plants and animals evolved the way they did in response to one another. Here, you see an image of a juvenile root-knot nematode (Meloidogyne incognita) penetrating a tomato root. Once inside, the juvenile causes a gall to form and robs the plant of nutrients. Photo by William Wergin and Richard Sayre of the USDA. Colorized by Stephen Ausmus. https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/b318b79e-58ca-48cb-9ec8-ed48bec9ba61/Ape-BehaviourandEcologyGroup-Logo_Ape-Color.png Home - Make it stand out Whatever it is, the way you tell your story online can make all the difference. https://www.apegroup-uzh.com/news daily 0.75 2025-11-09 https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4-9jyyj-5pmtg-w67pg-4ny8d-rjz5k-t6965 monthly 0.5 2025-11-09 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/dda14ea2-2cc8-4b6b-a006-37b8c9e7fdb3/Tsimane+by+Jaeggi.jpeg News - New publication in Evolutionary Human Sciences on object play in Tsimane children - Make it stand out Tsimane family in Bolivia. Photo credit: Adrian Jaeggi. https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4-9jyyj-5pmtg-w67pg-4ny8d-rjz5k-t6965-d7slh monthly 0.5 2025-08-08 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/a26b4fa0-218d-4509-b6ef-842dbbc1d225/5DD0B6A6-E6D5-45F8-9AD1-EAD4AD38AC0D.jpeg News - Nimba Chimpanzee Project wins Ethics & Diversity Award - Make it stand out Nimba Chimpanzee Project leaders. From left to right: Henry Camara, Kathelijne Koops, Maegan Fitzgerald, Gnan Mamy. https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4-9jyyj-5pmtg-w67pg-4ny8d-rjz5k monthly 0.5 2025-07-03 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/d1de533b-26dc-4c66-bba3-b6d26ba50d18/Koops_Taro.JPG News - Two PhD positions on Creativity in Wild Chimpanzees and Bonobos - Make it stand out Photo credit: Dr. Kathelijne Koops https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4-9jyyj-5pmtg-w67pg-4ny8d-rja4j monthly 0.5 2025-06-30 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/db005391-9ad0-4fd5-89aa-806a81ff946d/Bonobo_Koops1.JPG News - New project: The Creative Ape - Make it stand out Photo credit: Kathelijne Koops https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4-9jyyj-99jbz monthly 0.5 2024-11-25 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/08acb6a6-3463-49ad-aaba-92512d8e3ebf/Julia+Kunz.jpg News - Two new APE Group Members - Make it stand out Julia Kunz https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/8f5cb540-6d0b-46c5-9904-5688e9bcac26/Jonas+in+Nimba.jpg News - Two new APE Group Members - Make it stand out Jonas Mason https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4-9jyyj-5pmtg monthly 0.5 2024-01-24 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/4e030be2-bce6-4b76-9ac9-7483ffaae68d/3F884DA9-1756-4F1F-827A-D72C97D0CCBC_1_201_a.jpeg News - New paper on sociality in eastern and western chimpanzees - Make it stand out Western chimpanzee party engaged in grooming. Photo credit: Dr. Kathelijne Koops https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4-9jyyj monthly 0.5 2024-10-29 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/5fdfe3bd-b834-4bc1-b5b5-2bfa4e5cf236/Photo_Sandra_Simonet.jpg News - Two new APE Group Master’s students! - Make it stand out Sandra Simonet https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/d44b0d56-a621-482b-81ca-f3e82c885324/Desiree+photo+website.jpg News - Two new APE Group Master’s students! - Make it stand out Desirée Duvoisin https://www.apegroup-uzh.com/news/template-fmer4-4yhzl-wyjj4 monthly 0.5 2023-07-03 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/88dc0dce-d855-4201-a740-694089e222da/J.Funkhouser_2022.jpg News - Warm welcome to our new post-doc, Dr Jake Funkhouser! - Make it stand out Dr Jake Funkhouser joins the APE Group as a postdoctoral researcher. https://www.apegroup-uzh.com/news/template-fmer4-4yhzl monthly 0.5 2023-06-30 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/bf5d8977-d6c6-473d-98d6-5001d518de34/Henry.JPG News - Henry Camara wins IPS Conservation Education Award - Make it stand out Henry Camara in the Nimba Mountains, Guinea. Photo credit: Dr. Kathelijne Koops https://www.apegroup-uzh.com/news/template-fmer4 monthly 0.5 2023-03-24 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/ccdb0f3b-6cf5-4d9c-a549-59dd35559e22/Poni_04_by+K+Koops.JPG News - Genetics as conservation tool for endangered chimpanzees - Make it stand out Chimpanzee in the Nimba Mountains, Guinea. Photo credit: Dr. Kathelijne Koops https://www.apegroup-uzh.com/news/template-j5sdb monthly 0.5 2022-12-20 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/db6732dd-78f1-4ebc-b420-db6bafeabd46/Flanle2_K+Koops.JPG News - New publication ‘Chimpanzee Culture in Context’ - Make it stand out Wild chimpanzee in Guinea, West Africa. Photo credit: Dr. Kathelijne Koops https://www.apegroup-uzh.com/news/template-wetba monthly 0.5 2022-09-08 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/850653e3-70bf-45b1-9c6f-b1c02c86fe5c/Screenshot+2022-09-08+at+15.25.54.png News - New paper out on primate scleral coloration - Make it stand out Ocular diversity in the primate order. From Mearing et al. 2022 (Scientific Reports) https://www.apegroup-uzh.com/news/template-4alyx monthly 0.5 2022-09-08 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/e450f2b9-2be6-41dd-9747-11c604d818c4/APE+Group+Aug+2022.jpg News - Two new APE Group lab members! - Make it stand out APE Group members Kathelijne Koops, Lara Zanutto, and Ellen Soeters. Photo credit: Dr. Kathelijne Koops https://www.apegroup-uzh.com/news/template-c2wws monthly 0.5 2022-04-25 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/2c5c0039-043f-4552-9368-74a591c807fb/Drumming+tree.jpg News - New paper on chimpanzee buttress drumming! - Make it stand out Chimpanzees at a drumming tree in the Nimba Mountains, Guinea. Photo credit: Dr. Kathelijne Koops https://www.apegroup-uzh.com/news/template-grytd monthly 0.5 2022-03-09 https://images.squarespace-cdn.com/content/v1/61d606316b15d520d1986418/a4ef1f50-98a8-4e49-bf81-dea49bbb9654/K.+Koops+2.JPG News - Listen to Social Science Bites: Kathelijne Koops on Chimps and Tools - Make it stand out Kathelijne Koops at the Seringbara study site in the Nimba Mountains, Guinea. 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