The
Important Bird Area (IBA) consists of three separate properties: Wandown Flora and Fauna Reserve, Menzies Nature Conservation Reserve, and the Boundary Bend property owned and managed by
Trust For Nature. The vegetation is dominated by
mallee woodland and shrubland communities with patches of
semiarid non-eucalypt
woodland on
calcareous dunes with
loamy or
sandy
soils. The northernmost section of Boundary Bend is dominated by
lignum and other non-mallee communities. The area has a warm, dry climate with mean maximum temperatures ranging from 33 °C in January to 15.7 °C in July, and mean annual rainfall of 320 mm. ==Flora and fauna==