Testing the maintenance of natural responses to survival-relevant calls in the conservation breeding population of a critically endangered corvid (Corvus hawaiiensis) Anne C. SabolAlison L. GreggorRonald R. Swaisgood Original Article 15 January 2022 Article: 21
Robustness in action: Leg loss does not affect mating success in male harvestmen Ignacio EscalanteDamian O. Elias Original Article Open access 14 January 2022 Article: 20
The face never lies: facial expressions and mimicry modulate playful interactions in wild geladas Alessandro GalloAnna ZanoliElisabetta Palagi Original Article Open access 14 January 2022 Article: 19
Sex difference in homing: males but not females return home despite offspring mortality in Ikakogi tayrona, a glassfrog with prolonged maternal care P. Navarro-SalcedoL. F. Arcila-PérezF. Vargas-Salinas Original Article 13 January 2022 Article: 18
Female gray treefrogs maintain mate choice decisions under predation threat, but adjust movements to reduce conspicuousness during mate approach Olivia S FeaglesGerlinde Höbel Original Article 12 January 2022 Article: 17
Socio-sexual behaviors and fecal hormone metabolites but not age predict female aggressive interactions in Macaca arctoides Ana Lilia Cerda-MolinaLilian Mayagoitia-NovalesGilberto Matamoros-Trejo Original Article 08 January 2022 Article: 16
Restricted use of space in an endemic lizard of the Andes: addressing the effects of intrinsic and environmental factors Ana E. Victorica ErostarbeGustavo A. FavaJuan C. Acosta Featured Student Research Paper 08 January 2022 Article: 15
Food-hoarding and nest-building propensities are associated in a cavity-nesting bird Benjamin R. SonnenbergCarrie L. BranchVladimir V. Pravosudov Original Article 07 January 2022 Article: 14
Priority of access to food and its influence on social dynamics of an endangered carnivore N. R. JordanK. A. GolabekJ. W. McNutt Original Article 07 January 2022 Article: 13
Convergent evolution of antlions and wormlions: similarities and differences in the behavioural ecology of unrelated trap-building predators Krzysztof MilerInon Scharf Review 05 January 2022 Article: 12
No evidence for innate differences in tadpole behavior between natural, urbanized, and invasive populations Max MühlenhauptJames Baxter-GilbertJohn Measey Original Article 05 January 2022 Article: 11
Where are the males? The influence of bottom-up and top-down factors and sociability on the spatial distribution of a territorial ungulate A. PanebiancoP. F. GregorioP. D. Carmanchahi Original Article 05 January 2022 Article: 10
In mixed company: two macaws are self-regarding in a symbolic prosocial choice task Jessica Ann LeeteJennifer Vonk Featured Student Research Paper 04 January 2022 Article: 9
Correction to: Cooperation by ant queens during colony‑founding perpetuates alternative forms of social organization Pierre BlacherOrnela De GasperinMichel Chapuisat Correction Open access 31 December 2021 Article: 8
Decoupled evolution of mating biology and social structure in Acromyrmex leaf-cutting ants Romain A. DahanNathan K. GroveChristian Rabeling Original Article Open access 30 December 2021 Article: 7
Influence of different weather aspects on breeding performance, food supply and nest-space use in hoopoe offspring Soňa NuhlíčkováJán SvetlíkHerbert Hoi Original Article Open access 29 December 2021 Article: 6
The gullible genius: fast learners fall for fake news Ioanna GavriilidiSimon BaeckensRaoul Van Damme Original Article 29 December 2021 Article: 5
Termite eusociality and contrasting selective pressure on social and innate immunity Mark S. BulmerAlanna M. Stefano Original Article 29 December 2021 Article: 4
Evidence of intrapopulation differences in rattlesnake defensive behavior across neighboring habitats Marcus C. P. AtkinsChloe R. HowarthKarl W. Larsen Featured Student Research Paper 28 December 2021 Article: 3
Population specific annual cycles and migration strategies in a leap-frog migrant Linus HedhJuliana DänhardtAnders Hedenström Original Article Open access 28 December 2021 Article: 2
Food preference and food type innovation of surface- vs. cave-dwelling waterlouse (Asellus aquaticus) after 60 000 years of isolation Gábor HerczegViktória NyitraiGergely Horváth Original Article Open access 15 December 2021 Article: 1