TY  - RPRT
TI  - Hanging out at the airport: Unusual upside-down perching behavior by Eurasian Jackdaws (Corvus monedula) in a human-dominated environment
AU  - Todd E. Katzner
PY  - 2016
DO  - 10.1676/15-211.1
UR  - https://pubs.usgs.gov/publication/70182518
ID  - 70182518
ER  -