Issue 1/2021
Special Issue: In Honor of the Contributions of Irene M. Pepperberg . Guest Editors: Debbie M. Kelly and Lauren M. Guillette
Content (17 Articles)
Editorial
A special issue in honor of Irene Pepperberg: The chemist of comparative cognition
Debbie M. Kelly, Lauren M. Guillette
Convergent evolution of complex cognition: Insights from the field of avian cognition into the study of self-awareness
Luigi Baciadonna, Francesca M. Cornero, Nathan J. Emery, Nicola S. Clayton
Conspecific presence, but not pilferage, influences pinyon jays’ (Gymnorhinus cyanocephalus) caching behavior
Alizée Vernouillet, Hera J. M. Casidsid, Debbie M. Kelly
Open Access
Kea, Nestor notabilis, achieve cooperation in dyads, triads, and tetrads when dominants show restraint
R. Schwing, E. Meaux, A. Piseddu, L. Huber, R. Noë
Open Access
Response of male and female domestic chicks to change in the number (quantity) of imprinting objects
Bastien S. Lemaire, Rosa Rugani, Lucia Regolin, Giorgio Vallortigara
Open Access
Estimating on the fly: The approximate number system in rufous hummingbirds (Selasphorus rufus)
Mia Corliss, Theo Brown, T. Andrew Hurly, Susan D. Healy, Maria C. Tello-Ramos
Same/different concept learning by primates and birds
Anthony A. Wright, Debbie M. Kelly, Jeffrey S. Katz
Towards describing scenes by animals: Pigeons’ ordinal discrimination of objects varying in depth
Suzanne L. Gray, Muhammad A. J. Qadri, Robert G. Cook
Open Access
Innovative problem solving in macaws
Laurie O’Neill, Rahman Rasyidi, Ronan Hastings, Auguste M. P. von Bayern
Open Access
String-pulling in the Goffin’s cockatoo (Cacatua goffiniana)
Birgit Wakonig, Alice M. I. Auersperg, Mark O’Hara
Social factors in bird-song development: Learning to sing with friends and rivals
Michael D. Beecher, Çağlar Akçay
Open Access
Constraints on vocal production learning in budgerigars (Melopsittacus undulates)
Michael S. Osmanski, Yoshimasa Seki, Robert J. Dooling
Open Access
Who is crying wolf? Seasonal effect on antipredator response to age-specific alarm calls in common ravens, Corvus corax
Mario Gallego-Abenza, Christian R. Blum, Thomas Bugnyar