TY  - RPRT
TI  - Cooperation and competition: nepotistic tolerance and intrasexual aggression in western bluebird winter groups
AU  - J.L. Dickinson
AU  - M. Euaparadorn
AU  - K. Greenwald
AU  - C. Mitra
AU  - Daizaburo Shizuka
PY  - 2009
DO  - 10.1016/j.anbehav.2008.11.026
UR  - https://pubs.usgs.gov/publication/70034611
ID  - 70034611
ER  -