In the Bird Ecology and Migration group we study a range of ecological topics aimed primarily at birds. Our main current research questions centre on avian migration, space use and demography of migratory populations. We link breeding and non-breeding areas, investigate patterns of migratory connectivity and assess the effects of climate and habitat use to understand seasonal interactions across annual cycles. To this end, we use individual-based tracking, stable isotopes and remote sensing data. Ultimately, by combining these findings with long-term reproduction and survival data, we model underlying demographic processes to understand the key drivers of population change. In addition, we undertake meta-analyses summarising essential ecological topics, promote the use of previously collected biological samples from researchers in different fields and develop new continental isotopic maps for animal tissue origin assignments.