Eurasian Reed-warbler, Acrocephalus scirpaceus, is a species of passerine bird in the warbler family found in wetland and river and lake ecosystems. It is broadly distributed across the whole of Europe, with somewhat patchy distribution across the Southern and South-Eastern Europe. This species breeds mainly in mature beds of reed (Phragmites ) on the shores of lakes and fish ponds, and along rivers and ditches and locally, breeds in willow bushes in marshland, in reeds on edges of brackish lakes, exceptionally in corn fields. It also forages in adjacent herbaceous vegetation, scrub and low trees, such as willows (Salix ) (European Red List 2015).

Acrocephalus scirpaceus has a breeding population size of 1490000-2660000 pairs and a breeding range size of 2470000 square kilometres in the EU27. The breeding population trend in the EU27 is Stable in the short term and Stable in the long term.

The EU population status of Acrocephalus scirpaceus was assessed as Secure, because the species does not meet any of the IUCN Red List criteria for threatened or Near Threatened, or the criteria for Depleted or Declining (the EU27 population or range has not declined by 20% or more since 1980).