TY  - RPRT
TI  - Carbon isotope turnover as a measure of arrival time in migratory birds
AU  - Steffen Oppel
AU  - Abby N. Powell
PY  - 2009
DO  - 10.1007/s10336-009-0434-y
UR  - https://pubs.usgs.gov/publication/70173570
ID  - 70173570
ER  -