Female-biased sex ratios are associated with higher maternal testosterone levels in nutria (Myocastor coypus) R. FishmanY. VortmanL. Koren Original Article 01 June 2018 Article: 101
Repeatability and reproductive consequences of boldness in female gray seals Christine M. BubacDavid W. ColtmanCornelia E. den Heyer Original Article 01 June 2018 Article: 100
Long-term roosting data reveal a unimodular social network in large fission-fusion society of the colony-living Natterer’s bat (Myotis nattereri) Veronika M. ZeusChristine ReuschGerald Kerth Original Article 31 May 2018 Article: 99
Grooming facilitates huddling formation in Japanese macaques Masataka UenoMasayuki Nakamichi Original Article 30 May 2018 Article: 98
Runners and fighters: clutch effects and body size drive innate antipredator behaviour in hatchling lizards James Baxter-GilbertJulia L. RileyMartin J. Whiting Original Article 28 May 2018 Article: 97
Are aggressive vocalizations the honest signals of body size and quality in female Asian particoloured bats? Xin ZhaoTinglei JiangJiang Feng Original Article 24 May 2018 Article: 96
Aging male loons make a terminal investment in territory defense Walter H. PiperKristin M. BrunkNelson G. Gould Original Article 24 May 2018 Article: 95
Benefit of polyandry in a highly monandrous species when females mate with already mated males B. H. King Original Article 22 May 2018 Article: 94
Linking events throughout the annual cycle in a migratory bird—non-breeding period buffers accumulation of carry-over effects Martins BriedisMiloš KristPeter Adamík Featured Student Research Paper 21 May 2018 Article: 93
The effects of artificial rearing environment on the behavior of adult honey bees, Apis mellifera L. Ashley N. MortensenJames D. Ellis Featured Student Research Paper 20 May 2018 Article: 92
Resource-dependent temporal changes in antipredator behavior of common toad (Bufo bufo) tadpoles Anikó KuraliKatalin PásztorZoltán Tóth Original Article 16 May 2018 Article: 91
Not just for fun! Social play as a springboard for adult social competence in human and non-human primates Elisabetta Palagi Review 12 May 2018 Article: 90
The bone collector: temporal patterns of bone-gnawing behaviour define osteophagia as a female prerogative in a large rodent Emiliano MoriSandro LovariGiuseppe Mazza Original Article 11 May 2018 Article: 89
Predictors of nest growth: diminishing returns for subordinates in the paper wasp Polistes dominula Lena GrinstedJeremy Field Original Article Open access 11 May 2018 Article: 88
Influence of predation risk on individual spatial positioning and willingness to leave a safe refuge in a social benthic fish Jesse Balaban-FeldWilliam A. MitchellZvika Abramsky Original Article 10 May 2018 Article: 87
Adult nutrition and reproductive physiology: a stable isotope analysis in a eusocial paper wasp (Mischocyttarus mastigophorus, Hymenoptera: Vespidae) Sean O’DonnellKatherine FioccaDavid Velinsky Original Article 09 May 2018 Article: 86
Does aggression avoidance drive oak tree attendance by corvid scatter-hoarders? Mario B. PesendorferWalter D. Koenig Original Article 07 May 2018 Article: 85
Male and female signaling behavior varies seasonally during territorial interactions in a tropical songbird Alana D. DemkoDaniel J. Mennill Original Article 07 May 2018 Article: 84
Male aggressiveness as intrasexual contest competition in a cross-cultural sample Tara-Lyn CarterGeoff Kushnick Featured Student Research Paper 07 May 2018 Article: 83
Taking a risk: how far will male fiddler crabs go? Siobhan J. HeatwoleJohn H. ChristyPatricia R. Y. Backwell Original Article 07 May 2018 Article: 82
