Wiltshire-Butler

Wiltshire-Butler National Park is a 22,170-hectare protected area in the Midwest-Murchison region of Western Australia, north of Geraldton. The park protects mallee-heath, coastal kwongan, and inland sandplain vegetation in the transition between the Geraldton Sandplains and the semi-arid Murchison bioregion. The Geraldton Sandplains is one of the world's most floristically diverse regions, and Wiltshire-Butler protects a significant component of this botanical heritage. The park is managed by DBCA.

Wiltshire-Butler supports the mallee-kwongan fauna of the mid-coast region. Carnaby's black-cockatoo depends critically on banksia heath for foraging — the Geraldton Sandplains are one of the most important remaining Carnaby's habitats. Malleefowl build incubation mounds in undisturbed mallee. Western grey kangaroos, echidnas, quendas, honey possums, and diverse reptiles are present. Regent parrots may forage in the park's woodland sections.

The Geraldton Sandplains flora is globally exceptional — the region supports approximately 2,000 plant species, a substantial proportion endemic. Banksia candolleana, B. prionotes, B. menziesii, and B. attenuata dominate sandplain woodland. Mallee-heath includes numerous Hakea, Grevillea, and Acacia species. The spring wildflower display (August–October) is one of WA's finest — fields of Banksia prionotes (acorn banksia) with orange brush flower-cones are iconic.

The Geraldton Sandplains overlie Perth Basin sedimentary rocks covered by Quaternary aeolian sands. The coastal plain is underlain by Tamala Limestone in places. Sandy, nutrient-poor soils drive the extraordinary botanical diversity through the ecological principle of nutrient partitioning.

Mediterranean climate transitional between humid south and semi-arid north. Annual rainfall 350–450 mm. Hot, dry summers (regularly exceeding 40°C) and cool winters with spring rainfall. Spring (August–October) is the optimal visitor season.

Wiltshire-Butler lies within Yamatji country. Yamatji people have traditional connections to the Geraldton-Murchison region. European farming settlement of the Geraldton hinterland cleared much of the kwongan from the 1840s.

Wiltshire-Butler National Park was proclaimed to protect a significant expanse of the Geraldton Sandplains flora in the transition to the semi-arid north. The park forms part of the DBCA reserve network for the Midwest bioregion.

Spring wildflower observation through banksia woodland and mallee-kwongan. Birdwatching for Carnaby's black-cockatoos and malleefowl. Nature walks through diverse heath communities.

Located north of Geraldton on the Midwest coast. Access via unsealed roads. Minimal facilities. Free entry. Geraldton provides full services.

Carnaby's black-cockatoo recovery is a priority — the species has declined more than 50% since the 1970s due to habitat clearing. Phytophthora cinnamomi dieback threatens proteaceous flora. Malleefowl fox predation and invasive weeds require management.