TY  - RPRT
TI  - Willow Flycatcher nonbreeding territory defense behavior in Costa Rica
AU  - M. K. Sogge
AU  - T. J. Koronkiewicz
AU  - Charles van Riper
AU  - S.L. Durst
PY  - 2007
DO  - 10.1650/0010-5422(2007)109[475:wfntdb]2.0.co;2
UR  - https://pubs.usgs.gov/publication/70029862
ID  - 70029862
ER  -