“

Eglinton & Ningana Bushland: Cat Safety Where Marmion Ave Meets the Bush

Local, evidence-linked notes about boundary access, wildlife presence, and conditions that can shape roaming risk near this edge.

For cat owners living on the Eglinton side of Marmion Avenue, Ningana Bushland (Bush Forever Site 289) is more than a green backdrop—it’s a living, shifting boundary where domestic cats and native wildlife are never far apart. The bushland stretches from the edge of residential streets to the conservation area, and the mapped boundary brings cats, people, and protected habitats into close proximity[1][3]. Whether you’re near Marmion Avenue, the Yanchep Rail Extension, or backing onto the bushland, the choices you make for your cat have real effects on both their safety and the local environment[2].

Cats can easily find their way across Marmion Avenue and into the bush, using unfenced stretches, the new Yanchep Rail Extension alignment, and the open spaces around Lot 105 Marmion Avenue as natural movement corridors[1][2]. The rail line now forms a fresh barrier and pathway, changing how both cats and wildlife move between suburb and bush. The North Eglinton Structure Plan boundary also sits right against Ningana, meaning new homes bring more potential for cats to explore these edges[4]. For roaming cats, the bushland is both tempting and treacherous.

The conservation value of this boundary is high, especially for species like Carnaby’s Black Cockatoo, which have been documented foraging and roosting near Eglinton’s edge[2]. Quenda (Isoodon fusciventer) and reptiles such as the Jewelled South West Ctenotus and Black Striped Snake also use these habitats, making them vulnerable to predation by roaming cats—but the danger flows both ways. Cats venturing into the bush are at risk from snakes and from getting lost or injured in dense, unfamiliar terrain[2]. Every crossing of the boundary carries consequences for both wildlife and pets.

The Alkimos Dune Complex and stands of endangered Banksia woodlands set the tone for this edge, with unique plant communities like Tuart (Eucalyptus gomphocephala) and Priority Ecological Communities marking where suburb fades into bush[1]. These sensitive ecosystems are particularly susceptible to disturbance—not only from construction or people, but from the movement of cats that can spread weeds or disrupt ground-dwelling species. The bush here is not uniform; each patch brings its own set of risks and opportunities for wandering animals.

Seasonal change brings heightened bushfire risk along Marmion Avenue, especially during the warmer months[2]. For cats, this means the bushland can quickly become a hazardous place, with fire posing a direct threat to any animal caught beyond the safety of home. The risk is not theoretical—both suburb and bushland have been identified as vulnerable, and fire can move quickly across these open interfaces.

Edge effects are pronounced here: weed invasion, human disturbance, and the pressures of urban expansion all increase along the Ningana boundary. Cats, as both hunters and potential prey, are part of this dynamic. Their presence can tip the balance for sensitive habitats, while the changing landscape can expose them to new dangers. The need for careful management is clear, for the sake of both the bush and the pets who live nearby[2][4].

What sets the Eglinton–Ningana boundary apart is its mix of major infrastructure—Marmion Avenue, the rail extension—and high-value bushland, all mapped and recognized for conservation. For cat owners, this means living on a true frontier: a place where every back fence or street crossing is a meeting point of suburb, wild country, and the responsibilities that come with both[1][2][3].

Landmark structure and designation

Marmion Avenue forms a major boundary or interface between the suburb of Eglinton and Ningana Bushland (Bush Forever Site 289), with development on the Eglinton side and conservation land on the other.

The Yanchep Rail Extension alignment cuts through the northern part of Ningana Bushland, forming a new infrastructure boundary between Eglinton and the conservation area.

The mapped boundary of Bush Forever Site 289 (Ningana Bushland) defines the conservation area adjacent to Eglinton, with the suburb’s urban boundary abutting the bushland edge in several places.

Bush Forever Site 289 is formally recognized as a conservation area, with its boundary demarcating the limit of urban Eglinton and the start of protected bushland.

Suburb interface and movement pathways

Marmion Avenue provides a direct physical interface between Eglinton and Ningana Bushland.

The Yanchep Rail Extension alignment cuts through the bushland, creating a new point of adjacency with Eglinton.

Lot 105 Marmion Avenue, located within southern Yanchep and adjacent to Eglinton, falls within the boundary of Bush Forever Site 289, highlighting the overlap of suburb and conservation land.

The North Eglinton Structure Plan boundary abuts Ningana Bushland, defining a planning interface.

The Alkimos Dune Complex forms a geomorphological boundary at the Eglinton–Ningana interface.

Fauna, fire, flood, and seasonal behaviour

Boundary areas provide foraging and roosting habitat for Carnaby’s Black Cockatoo, with utilization observed near the Eglinton interface.

The boundary zone supports the “”Banksia woodlands of the Swan Coastal Plain”” (Endangered TEC), with significant stands present along the Eglinton–Ningana Bushland interface.

Boundary habitats support conservation significant reptiles such as the Jewelled South West Ctenotus and Black Striped Snake, with records near the Eglinton interface.

The bushland boundary adjacent to Marmion Avenue is considered at risk of bushfire, especially during warmer months, with implications for both Eglinton and Ningana Bushland.

The Yanchep Rail Extension forms a linear barrier at the boundary, potentially impacting ecological connectivity between Eglinton and Ningana Bushland.

The boundary of Ningana Bushland is highly sensitive to edge effects from adjacent Eglinton urban development, including weed invasion and human disturbance.

Habitat at the boundary supports Quenda (Isoodon fusciventer), with potential movement corridors disrupted by the rail alignment between Eglinton and Ningana Bushland.

“”Tuart (Eucalyptus gomphocephala) woodlands of the Swan Coastal Plain”” (Priority 3 PEC) occur along the boundary, contributing to the conservation value at the Eglinton–Ningana interface.

“”Banksia dominated woodlands of the Swan Coastal Plain”” (Priority 3 PEC) are present at the boundary, marking a transition from urban Eglinton to high-value bushland.

Sources

”

The Cat Safety Network is a not for profit community project resourced by Kittysafe