TY  - RPRT
TI  - Ravens, Corvus corax, differentiate between knowledgeable and ignorant competitors.
AU  - Thomas Bugnyar
AU  - Bernd Heinrich
PY  - 2005
DO  - 10.1098/rspb.2005.3144
UR  - https://pubmed.ncbi.nlm.nih.gov/16087417/
ID  - 16087417
ER  -