TY  - RPRT
TI  - Cowbird parasitism in grassland and cropland in the northern Great Plains
AU  - Rolf R. Koford
AU  - B. S. Bowen
AU  - John T. Lokemoen
AU  - Arnold D. Kruse
PY  - 2000
UR  - https://pubs.usgs.gov/publication/85403
ID  - 85403
ER  -