TY  - RPRT
TI  - Combining Breeding Bird Survey and distance sampling to estimate density of migrant and breeding birds
AU  - S.G. Somershoe
AU  - D.J. Twedt
AU  - B. Reid
PY  - 2006
UR  - https://pubs.usgs.gov/publication/5224675
ID  - 5224675
ER  -