TY  - RPRT
TI  - Suspected Great Blue Heron population decline after a severe winter in the Columbia Basin
AU  - Lawrence J. Blus
AU  - Charles J. Henny
PY  - 1981
DO  - 10.2307/3534443
UR  - https://pubs.usgs.gov/publication/5221725
ID  - 5221725
ER  -