TY  - RPRT
TI  - Fertility of eggs produced on territories of vasectomized red-winged blackbirds
AU  - Olin E. Bray
AU  - James J. Kennelly
AU  - Joseph L. Guarino
PY  - 1975
UR  - https://pubs.usgs.gov/publication/70210083
ID  - 70210083
ER  -