Change

Woodland bird community decline

Declining detections across six monitoring sites. Mean decline 31% relative detection frequency for the woodland-dependent assemblage, with survey hours held approximately constant.

2018–2026 · confidence moderate

Structural restoration without ecological recovery

LandSentinel-class observation: vegetation cover and woody structure increased after restoration plantings. BioSentinel observation: woodland-specialist detections remain low relative to the Mulgoa reference; generalists and miners colonised first.

2014–2026 · confidence moderate

African Olive expansion on woodland edges

Plot cover at the Castlereagh edge rose from 0.12 to 0.31. First observation in this demonstration is not a first landscape record.

2018–2025 · confidence moderate

Swift Parrot remains an irregular winter visitor, not a resident population

Two validated winter detections, coordinates generalised. No evidence of local breeding. National status is Critically Endangered.

2020–2024 · confidence moderate

Varied Sittella not recorded 2024–2026 at two former sites

Candidate local disappearance or sharp occupancy drop. Not yet an IntelligenceObject.

Acoustic diversity reduction at Castlereagh

Soundscape index declined. Classifier confidence 0.62. Supports, does not replace, the bird-survey IntelligenceObject.

African Olive on restoration margin

Possible establishment following disturbance and planting. Escalation would require density and spread.

Possible recolonisation — Scarlet Honeyeater at Shanes Park

May indicate nectar resource returning. Must not be read as assemblage recovery.