Low migratory connectivity is common in long‐distance migrant birds

Summary Estimating how much long‐distance migrant populations spread out and mix during the non‐breeding season (migratory connectivity) is essential for understanding and predicting population dynamics in the face of global change. We quantify variation in population spread and inter‐population mixing in long‐distance, terrestrial migrant land‐bird populations (712 individuals from 98 populations of 45 species, from tagging studies in the...