Western Scrub-Jay (Aphelocoma californica)

2002 ◽  
Author(s):  
Robert L. Curry ◽  
A. Townsend Peterson ◽  
Tom A. Langen
Keyword(s):  
Aphelocoma Californica

California Scrub-Jay (Aphelocoma californica)

2017 ◽  
Author(s):  
Robert L. Curry ◽  
A. Townsend Peterson ◽  
Tom A. Langen ◽  
Peter Pyle ◽  
Michael A. Patten
Keyword(s):  
Aphelocoma Californica

scholarly journals Difficulties when using video playback to investigate social cognition in California scrub-jays (Aphelocoma californica)

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e4451 ◽  
Author(s):  
Katharina F. Brecht ◽  
Ljerka Ostojić ◽  
Edward W. Legg ◽  
Nicola S. Clayton
Keyword(s):  
Decision Making ◽  
Social Context ◽  
Real Life ◽  
Social Conditions ◽  
Video Playback ◽  
Social Stimuli ◽  
Aphelocoma Californica ◽  
Social Agents ◽  
Protection Strategies ◽  
Cache Protection

Previous research has suggested that videos can be used to experimentally manipulate social stimuli. In the present study, we used the California scrub-jays’ cache protection strategies to assess whether video playback can be used to simulate conspecifics in a social context. In both the lab and the field, scrub-jays are known to exhibit a range of behaviours to protect their caches from potential pilferage by a conspecific, for example by hiding food in locations out of the observer’s view or by re-caching previously made caches once the observer has left. Here, we presented scrub-jays with videos of a conspecific observer as well as two non-social conditions during a caching period and assessed whether they would cache out of the observer’s “view” (Experiment 1) or would re-cache their caches once the observer was no longer present (Experiment 2). In contrast to previous studies using live observers, the scrub-jays’ caching and re-caching behaviour was not influenced by whether the observer was present or absent. These findings suggest that there might be limitations in using video playback of social agents to mimic real-life situations when investigating corvid decision making.

scholarly journals The development of caching and object permanence in western scrub-jays (Aphelocoma californica): Which emerges first?

2009 ◽  
Vol 123 (3) ◽  
pp. 295-303 ◽  
Author(s):  
Lucie H. Salwiczek ◽  
Nathan J. Emery ◽  
Barney Schlinger ◽  
Nicola S. Clayton
Keyword(s):  
Object Permanence ◽  
Aphelocoma Californica

Food Caching by Western Scrub-Jays (Aphelocoma californica) Is Sensitive to the Conditions at Recovery.

2005 ◽  
Vol 31 (2) ◽  
pp. 115-124 ◽  
Author(s):  
Nicola S. Clayton ◽  
Joanna Dally ◽  
James Gilbert ◽  
Anthony Dickinson
Keyword(s):  
Aphelocoma Californica ◽  
Food Caching

The social suppression of caching in western scrub-jays (Aphelocoma californica)

Behaviour ◽  
2005 ◽  
Vol 142 (7) ◽  
pp. 961-977 ◽  
Author(s):  
Nathan J. Emery ◽  
Joanna M. Dally ◽  
Nicola S. Clayton
Keyword(s):  
Dominant Male ◽  
Aphelocoma Californica ◽  
The Social ◽  
Group 3 ◽  
Social Suppression

AbstractThis study focussed on the social suppression of caching in 3 groups of western scrub-jays (Aphelocoma californica). Each group (3 males and 4 females) were housed in a separate aviary. Only the dominant male and/or his partner cached in each aviary. When the alpha pair was removed from the aviary, however, caching by the beta pair increased significantly. As all subordinate birds cache when housed individually, cache cessation was attributed to social suppression. In each aviary, storers from both the alpha and beta pairs tolerated their partners recovering their caches, but treated all other birds aggressively if they approached a cache site. The storer and their partner tended to move one another's caches around multiple times, possibly making the final location of caches ambiguous. Importantly, caches were only moved around repeatedly on trials where multiple pilfering attempts were made. Western scrub-jays therefore appear to adjust their caching behaviour depending on the risk that observers pose to their caches.

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