About the Authors

April Hedd

ahedd@mun.ca

Affiliation Cognitive and Behavioural Ecology Program, Psychology Department, Memorial University, St. John’s, Newfoundland and Labrador, Canada

William A. Montevecchi

Affiliation Cognitive and Behavioural Ecology Program, Psychology Department, Memorial University, St. John’s, Newfoundland and Labrador, Canada

Richard A. Phillips

Affiliation British Antarctic Survey, Natural Environment Research Council, Cambridge, United Kingdom

David A. Fifield

Affiliation Cognitive and Behavioural Ecology Program, Psychology Department, Memorial University, St. John’s, Newfoundland and Labrador, Canada

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AH WAM RAP. Performed the experiments: AH WAM. Analyzed the data: AH. Contributed reagents/materials/analysis tools: AH WAM RAP DAF. Wrote the paper: AH WAM RAP DAF.