Items where Author is "Tkaczynski, PJ"

Hinchcliffe, DL ORCID: 0000-0001-5204-5161 and Tkaczynski, PJ ORCID: 0000-0003-3207-2132 (2025) Shifting Seasons: Long‐Term Insights Into Climate Change Effects on Bird Phenology From Ringing Data. Ecology and Evolution, 15 (10). e72317-e72317. ISSN 2045-7758

Rolland, E ORCID: 0000-0002-3241-9442, Nodé-Langlois, O, Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Girard-Buttoz, C ORCID: 0000-0003-1742-4400, Rayson, H, Crockford, C and Wittig, RM ORCID: 0000-0001-6490-4031 (2025) Evidence of organized but not disorganized attachment in wild Western chimpanzee offspring (Pan troglodytes verus). Nature Human Behaviour. pp. 1-12.

Fedurek, P ORCID: 0000-0002-6902-708X, Girard-Buttoz, C ORCID: 0000-0003-1742-4400, Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Hobaiter, C, Zuberbühler, K ORCID: 0000-0001-8378-088X, Wittig, RM and Crockford, C (2025) Maternal gregariousness and female audience effects mediate mother–infant proximity in wild chimpanzees. Animal Behaviour, 223. ISSN 0003-3472

De Moor, D ORCID: 0000-0003-2474-6125, Skelton, M ORCID: 0009-0002-7166-2995, MacaqueNet, Amici, F ORCID: 0000-0003-3539-1067, Arlet, ME ORCID: 0000-0001-9890-5999, Balasubramaniam, KN ORCID: 0000-0002-2101-0588, Ballesta, S ORCID: 0000-0002-7854-5735, Berghänel, A ORCID: 0000-0002-3317-3392, Berman, CM ORCID: 0000-0001-7328-2588, Bernstein, SK ORCID: 0000-0003-4093-6922, Bhattacharjee, D ORCID: 0000-0002-4555-7983, Bliss-Moreau, E ORCID: 0000-0002-0740-5612, Brotcorne, F ORCID: 0000-0003-2780-3631, Butovskaya, M ORCID: 0000-0002-5528-0519, Campbell, LAD ORCID: 0000-0002-8302-7430, Carosi, M ORCID: 0000-0003-1377-2942, Chatterjee, M ORCID: 0000-0002-2794-4189, Cooper, MA ORCID: 0000-0001-9645-1671, Cowl, VB ORCID: 0000-0002-7928-4549, De la O, C ORCID: 0000-0001-5910-2130 et al (2025) MacaqueNet: Advancing comparative behavioural research through large-scale collaboration. The Journal of animal ecology. pp. 1-16. ISSN 0021-8790

Grampp, M ORCID: 0000-0001-5423-8960, Samuni, L, Girard-Buttoz, C ORCID: 0000-0003-1742-4400, León, J, Zuberbühler, K, Tkaczynski, PJ, Wittig, RM ORCID: 0000-0001-6490-4031 and Crockford, C (2023) Social uncertainty promotes signal complexity during approaches in wild chimpanzees (Pan troglodytes verus) and mangabeys (Cercocebus atys atys). Royal Society Open Science, 10 (11). p. 231073. ISSN 2054-5703

Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Mafessoni, F ORCID: 0000-0003-4319-2076, Girard-Buttoz, C, Samuni, L ORCID: 0000-0001-7957-6050, Ackermann, CY, Fedurek, P, Gomes, C, Hobaiter, C, Löhrich, T, Manin, V, Preis, A, Valé, PD, Wessling, EG, Wittiger, L, Zommers, Z, Zuberbuehler, K, Vigilant, L ORCID: 0000-0003-4509-1260, Deschner, T, Wittig, RM and Crockford, C (2023) Shared community effects and the non-genetic maternal environment shape cortisol levels in wild chimpanzees. Communications Biology, 6 (1). p. 565. ISSN 2399-3642

Girard-Buttoz, C, Tkaczynski, PJ, Samuni, L, Fedurek, P, Gomes, C, Löhrich, T, Manin, V, Preis, A, Valé, PF, Deschner, T, Wittig, RM and Crockford, C (2021) Early maternal loss leads to short- but not long-term effects on diurnal cortisol slopes in wild chimpanzees. eLife, 10. ISSN 2050-084X

Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Behringer, V ORCID: 0000-0001-6338-7298, Ackermann, CY ORCID: 0000-0002-0520-2758, Fedurek, P, Fruth, B ORCID: 0000-0001-9217-3053, Girard-Buttoz, C, Hobaiter, C ORCID: 0000-0002-3893-0524, Lee, SM ORCID: 0000-0002-9897-3315, Loehrich, T, Preis, A, Samuni, L, Zommers, Z, Zuberbuehler, K, Deschner, T, Wittig, RM, Hohmann, G and Crockford, C (2020) Patterns of urinary cortisol levels during ontogeny appear population specifi c rather than species specifi c in wild chimpanzees and bonobos. Journal of Human Evolution, 147. ISSN 0047-2484

Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Mielke, A ORCID: 0000-0002-8847-6665, Samuni, L, Preis, A, Wittig, RM ORCID: 0000-0001-6490-4031 and Crockford, C ORCID: 0000-0001-6597-5106 (2020) Long-term repeatability in social behaviour suggests stable social phenotypes in wild chimpanzees. Royal Society Open Science, 7 (8). ISSN 2054-5703

Bruendl, AC ORCID: 0000-0001-9887-3229, Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Kohou, GN, Boesch, C, Wittig, RM ORCID: 0000-0001-6490-4031 and Crockford, C ORCID: 0000-0001-6597-5106 (2020) Systematic mapping of developmental milestones in wild chimpanzees. Developmental Science, 24 (1). ISSN 1363-755X

Fedurek, P, Tkaczynski, PJ, Asiimwe, C, Hobaiter, C, Samuni, L, Lowe, AE, Dijrian, AG, Zuberbühler, K, Wittig, RM and Crockford, C (2019) Maternal cannibalism in two populations of wild chimpanzees. Primates, 61 (2). pp. 181-187. ISSN 0032-8332

Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Ross, C, Lehmann, J ORCID: 0000-0001-7278-1705, Mouna, M, Majolo, B ORCID: 0000-0002-0235-3040 and MacLarnon, A ORCID: 0000-0003-2722-4998 (2019) Repeatable glucocorticoid expression is associated with behavioural syndromes in males but not females in a wild primate. Royal Society Open Science, 6 (9). ISSN 2054-5703

Campbell, LAD ORCID: 0000-0002-8302-7430, Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Mouna, M, Derrou, A, Oukannou, L, Majolo, B ORCID: 0000-0002-0235-3040 and van Lavierenv, E (2018) Behavioural thermoregulation via microhabitat selection of winter sleeping areas in an endangered primate: implications for habitat conservation. Royal Society Open Science, 5 (12). ISSN 2054-5703

Sonnweber, R, Araya-Ajoy, YG, Behringer, V, Deschner, T, Tkaczynski, PJ, Fedurek, P, Preis, A, Samuni, L, Zommers, Z, Gomes, C, Zuberbühler, K, Wittig, RM and Crockford, C (2018) Circadian Rhythms of Urinary Cortisol Levels Vary Between Individuals in Wild Male Chimpanzees: A Reaction Norm Approach. Frontiers in Ecology and Evolution, 6 (85). ISSN 2296-701X

Campbell, LAD, Tkaczynski, PJ, Lehmann, J, Mouna, M and Majolo, B (2018) Social thermoregulation as a potential mechanism linking sociality and fitness: Barbary macaques with more social partners form larger huddles. Scientific Reports, 8 (1). ISSN 2045-2322

Campbell, LAD, Tkaczynski, PJ ORCID: 0000-0003-3207-2132, Mouna, M, Qarro, M, Waterman, J and Majolo, B (2016) Behavioral responses to injury and death in wild Barbary macaques (Macaca sylvanus). Primates, 57 (3). pp. 309-315. ISSN 0032-8332