TY  - RPRT
TI  - Geographic variation in Yellow-headed Blackbirds from the northern Great Plains
AU  - Daniel J. Twedt
AU  - William J. Bleier
AU  - George M. Linz
PY  - 1994
DO  - 10.2307/1369112
UR  - https://pubs.usgs.gov/publication/70203011
ID  - 70203011
ER  -