TY  - RPRT
TI  - Evaluation of a reproductive index to estimate grasshopper sparrow and eastern meadowlark reproductive success
AU  - Donald P. Althoff
AU  - P. S. Gipson
AU  - J.S. Pontius
AU  - R.D. Japuntich
PY  - 2009
DO  - 10.2461/wbp.2009.5.6
UR  - https://pubs.usgs.gov/publication/70036883
ID  - 70036883
ER  -