TY  - RPRT
TI  - Concern is more than just 'ruffled feathers'.
AU  - Kai M A Chan
AU  - Stephen Porder
AU  - Paul A T Higgins
AU  - Sasha B Kramer
PY  - 2004
DO  - 10.1038/428255a
UR  - https://pubmed.ncbi.nlm.nih.gov/15029167/
ID  - 15029167
ER  -