Great Reed Warbler
rastaskerttunen · Acrocephalus arundinaceus

Photo: Andreas Trepte, CC BY-SA 2.5
Family: Acrocephalidae (Kerttuset) · Size: 16–20 cm
The great reed warbler is an insectivorous bird in the family Acrocephalidae. It is a medium-sized passerine bird and the largest of the warblers. It breeds throughout mainland Europe and the Western Palearctic and migrates to sub-Saharan Africa in the winter. It favours reed beds during the breeding season, while living in reed beds, bush thickets, rice fields, and forest clearings during the winter. It exhibits relatively low sexual dimorphism, and the sexes are similar in appearance. This species mates both polygynously and monogamously.
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