Atypical wintry capture of Great Reed Warbler Acrocephalus arundinaceus (Linnaeus, 1758) in Lower Loukkos wetlands complex (North Morocco) Capture hivernale atypique d'une Rousserolle turdoïde Acrocephalus arundinaceus (Linnaeus, 1758) dans le complexe de zones humides du Bas Loukkos (Nord du Maroc)

On 9 th February 2015, a Great Reed Warbler Acrocephalus arundinaceus ***, a trans-saharan migrant passerine, breeding patchily in North-West Africa and widely in Europe, was caught and ringed in the Lower Loukkos wetlands complex (North Morocco, near the city of Larache). This atypical wintry data reveals the early arrival of a local breeder or of a bird migrating to northern areas. In either case, the data documented here highlights that in the future regular ringing efforts during winter in North Moroccan wetlands, and globally in North Africa, might allow a better understanding of migration strategies of reed bed passerines with high selective value in the context of climate change.