Acrocephalus arundinaceus

The great reed warbler is a migratory Palearctic songbird that breeds through Europe and Asia before moving to tropical sub-Saharan Africa. It is closely tied to water and generally occupies reed beds and other dense vegetation bordering lakes, streams, marshes, and swamps, commonly between 200 and 700 metres elevation. One of the larger warblers, it measures 19–20 cm, spans approximately 26 cm, and weighs 21–51 g. Both sexes have brown upperparts, pale underparts, and long, pointed wings. (Animal Diversity Web)

Its mainly carnivorous diet consists of insects and spiders, supplemented by snails, small fish, frogs, and some fruit outside the breeding season. Mating arrangements include monogamy and polygyny, with females choosing males partly through territory quality and song repertoire. Females construct nests and provide most direct care, while monogamous males help feed the young. Breeding occurs from April into August in Europe. Clutches contain three to six eggs, which hatch after an average incubation period of fourteen days. (Animal Diversity Web)