Animal tracing with sulfur isotopes : Spatial segregation and climate variability in Africa likely contribute to population trends of a migratory songbird
Climatic conditions affect animals but range-wide impacts at the population level remain largely unknown, especially in migratory species. However, studying climate–population relationships is still challenging in small migrants due to a lack of efficient and cost-effective geographic tracking method. Spatial distribution patterns of environmental stable isotopes (so called ‘isoscapes’) generally
