Attacked ravens flexibly adjust signalling behaviour according to audience composition.

Area of Science:

• Comparative Psychology
• Animal Behavior
• Cognitive Ecology

Background:

• Social intelligence involves monitoring third-party relationships, observed in primates and captive ravens.
• Understanding how ravens use this ability in complex, real-life social dynamics remains unclear.
• Free-ranging ravens exhibit fission-fusion social structures influenced by age, pair-bonds, and kinship.

Purpose of the Study:

• To investigate if free-ranging ravens modify communication during conflicts based on audience composition.
• To determine how ravens utilize their social knowledge in dynamic, real-life social interactions.

Main Methods:

• Observing communication patterns of free-ranging, non-breeder ravens during aggressive encounters.
• Analyzing distress call rates in relation to the social status of bystanders (kin vs. aggressor's allies).

Main Results:

• Ravens adjust distress calls based on the audience during conflicts with dominant conspecifics.
• Increased defensive call rates were observed when kin were present in the bystander audience.
• Decreased defensive call rates occurred when bystanders were bonding partners of the aggressors.

Conclusions:

• Free-ranging ravens demonstrate flexible use of social knowledge in communication.
• Call modification appears to be a strategic behavior, potentially to alert allies and avoid alerting rivals.
• This highlights sophisticated audience-dependent communication in a non-primate species.