TY  - RPRT
TI  - Effects of abundant species on the ability of observers to make accurate counts of birds
AU  - J. Michael Scott
AU  - Fred L. Ramsey
PY  - 1981
DO  - 10.1093/auk/98.3.610
UR  - https://pubs.usgs.gov/publication/5221079
ID  - 5221079
ER  -