Country/territory: Netherlands

IBA Criteria met: A4i, A4iii, B1i, B3, C2, C3, C4, C6 (2016)
For more information about IBA criteria please click here

Area: 5,477 ha

Vogelbescherming Nederland
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2018 medium not assessed high
For more information about IBA monitoring please click here

Site description
An extensive area of shallow lakes, pools, reedbeds, Salix woodland and grassland which has developed on a polder (Zuidelijk Flevoland, reclaimed in 1968), having been spared from cultivation. It is situated south of the city of Lelystad, and adjoins Markermeer (038) in the north. This site, together with site 067, formed part of a single, larger site (former site NL031) in the previous pan-European IBA inventory (Grimmett and Jones 1989).

Key biodiversity
The site is the main roost for geese Anser from feeding areas in Flevoland, and is the most important moulting area for Anser anser in north-west Europe.

Recommended citation
BirdLife International (2021) Important Bird Areas factsheet: Oostvaardersplassen. Downloaded from on 08/12/2021.