TY - RPRT TI - Animal tracing with sulfur isotopes: Spatial segregation and climate variability in Africa likely contribute to population trends of a migratory songbird AU - Vojtech Brlik AU - Petr Prochazka AU - Bengt Hansson AU - Craig A. Stricker AU - Elizabeth Yohannes AU - Rebecca L Powell AU - Michael B. Wunder PY - 2022 DO - 10.1111/1365-2656.13848 UR - https://pubs.usgs.gov/publication/70248276 ID - 70248276 ER -