TY  - RPRT
TI  - Range-wide impact of brown-headed cowbird parasitism on the southwestern willow flycatcher (Empidonax traillii extimus)
AU  - Mary J. Whitfield
AU  - Mark K. Sogge
PY  - 1999
UR  - https://pubs.usgs.gov/publication/70194271
ID  - 70194271
ER  -