1. Are kea prosocial?. (1st September 2019) Authors: Heaney, Megan; Bastos, Amalia P. M.; Gray, Russell D.; Taylor, Alex H. Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 176 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Blue‐throated macaws (Ara glaucogularis) succeed in a cooperative task without coordinating their actions. (18th October 2019) Authors: Tassin de Montaigu, Cannelle; Durdevic, Kresimir; Brucks, Désirée; Krasheninnikova, Anastasia; von Bayern, Auguste Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 267 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Corvids avoid odd evaluation by following simple rules in a risky exchange task. (10th December 2019) Authors: Dufour, Valérie; Broihanne, Marie‐Hélène; Wascher, Claudia A. F. Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 153 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Crows and common ravens do not reciprocally exchange tokens with a conspecific to gain food rewards. (23rd October 2019) Authors: Wascher, Claudia A. F.; Feider, Béatrice; Bugnyar, Thomas; Dufour, Valérie Editors: Massen, Jorg Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 278 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
5. Different patterns of allopreening in the same‐sex and opposite‐sex interactions of juvenile large‐billed crows (Corvus macrorhynchos). (13th December 2019) Authors: Miyazawa, Eri; Seguchi, Akiko; Takahashi, Nana; Motai, Ayumi; Izawa, Ei‐Ichi Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 195 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
6. Food calling in wild ravens (Corvus corax) revisited: Who is addressed?. (11th December 2019) Authors: Sierro, Javier; Loretto, Matthias‐Claudio; Szipl, Georgine; Massen, Jorg J. M.; Bugnyar, Thomas Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 257 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
7. Front Cover. (13th January 2020) Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: i Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
8. Individual and social factors affecting the ability of American crows to solve and master a string pulling task. (30th December 2019) Authors: Pendergraft, LomaJohn T.; Lehnert, Adrienne L.; Marzluff, John M. Editors: Goymann, Wolfgang Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 229 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
9. Issue Information. (13th January 2020) Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: ii Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗
10. Mirror‐mediated responses of California scrub jays (Aphelocoma californica) during a caching task and the mark test. (2nd October 2019) Authors: Clary, Dawson; Stow, Meara K.; Vernouillet, Alizée; Kelly, Debbie M. Editors: Massen, Jorg Johannes Maria Other Names: Massen Jorg guestEditor. Journal: Ethology Issue: Volume 126:Number 2(2020) Page Start: 140 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗