Excursion 17: Hovell’s Creek and Limeburners Lagoon

Leaders: Bernie Lingham and Lorraine Phelan

The estuary at the confluence of Hovells Creek and Limeburners Lagoon is notable for its diverse habitats and wildlife. A variety of birds and reptiles can be observed in this area. The estuary and its valley support salt-tolerant vegetation, which flourishes in the saline conditions. Within the tidal zone, large stands of mangroves (White or Grey Mangrove Avicennia marina ssp. australasica) are present, contributing to the ecological balance and providing essential shelter for local fauna. Beyond the immediate estuary, the surrounding land forms part of the Victorian Volcanic Plains grassland zone. This area extends the range of habitats available, supporting a unique group of plant species adapted to the volcanic soils and grassland environment.

Twenty-three SEANA participants, accompanied by four GFNC members, explored sections of the Lagoon’s shoreline, where salt marsh plants were easily observed. Particularly noteworthy near the water’s edge were extensive mats of Silky Wilsonia (Wilsonia humilis), Austral Sea-blite (Suaeda australis) and Grey Samphire (Tecticornia halocnemoides ssp. halocnemoides). At the southern end of the lagoon, a solitary young mangrove was spotted growing in the shallows, while a much larger mangrove stand exists further north within the lagoon. On the slope overlooking the water, robust stands of Hedge Salt-bush (Rhagodia spinescens) were thriving.

We thoroughly enjoyed our leisurely walk, taking the time to investigate the marine environment. The area was teeming with gastropods, especially Australian Mud Whelks. Along the shore, we also came across the remains of several Lion’s Mane Jellyfish and significant amounts of washed-up sea grass.

Altogether, we observed and recorded 34 bird species https://ebird.org/checklist/S315451873. Highlights included a Sea Eagle (which was being harassed by Masked Lapwings), a group of 12 Hoary-headed Grebes, three Great Crested Grebes, and a Buff-banded Rail.