TY  - RPRT
TI  - Vocal activity as a low cost and scalable index of seabird colony size
AU  - Abraham L. Borker
AU  - Matthew W. McKown
AU  - Joshua T. Ackerman
AU  - Collin A. Eagles-Smith
AU  - Bernie R. Tershy
AU  - Donald A. Croll
PY  - 2014
DO  - 10.1111/cobi.12264
UR  - https://pubs.usgs.gov/publication/70099139
ID  - 70099139
ER  -