In my last Bush Bites article I shared my love of birds and discussed the diversity of birdlife in Deerhurst Park, an area of parkland which runs between Brookfield Road and Gap Creek Road in Brookfield.

In this article I will introduce you to another amazing birding site within our catchment: Gold Creek Reservoir, an entry point to an extensive network of trails that lead as far as Lake Manchester and the Enoggera Reservoir. Gold Creek Dam is managed by SEQ Water.

BIRDING SITE #2: GOLD CREEK RESERVOIR

This birding site is registered with Australia|eBird (ebird.org/region/AU?yr=all) as: GOLD CREEK RESERVOIR: Latitude: -27.4628622 and Longitude: 152.883352.

The Gold Creek Reservoir is an eBird “Hotspot”. The eBird site has received 1100 checklists submitted by birders who have visited the site over the years!

When overseas birders visit Brisbane, most would visit the Gold Creek Dam. You are encouraged to submit checklists for all visits you make. Contact me to learn how!

Where is the site?

The address of the site is: 6810 Gold Creek Rd, Brookfield QLD 4069.

This is the western end of Gold Creek Road. To get there by car go to the end of Brookfield Rd at the Brookfield Show Ground, where it meets Gold Creek Rd at the roundabout. Then drive west to the end of Gold Creek Rd. The Dam is about a 15-minute drive from Kenmore Village.

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Where to look for birds?

1. Main Tracks

The bushland surrounding the Gold Creek Dam is part of Brisbane Forest Park. There is a designated walking trail around Gold Creek Reservoir, in addition to the extensive fire-trail network on the hills.

The 4.5km Gold Creek Walking Track circumnavigates the Reservoir and it is an excellent way to enter all the divergent habitats there. The start of the walking track is found at both ends of the dam wall, walk clockwise or anticlockwise!

The Gold Creek Walking Track traverses grassland habitats, tall eucalypt forests, riparian zones and rainforest microhabitats in the protected gullies and good views can be had of the birds on the water at particular points.

It is a moderately difficult trail. If there is the chance to go birding for the whole day then the Reservoir tracks are the entry point into one of the most significant trail networks on Brisbane’s doorstep. Gold Creek tracks connect to longer tracks that lead to the birds at Lake Manchester and at the Enoggera Reservoir.

Cody Hochen is a Wildlife Conservation Partnerships Officer with Brisbane City Council.

Earlier in the year we approached Cody for information about the Richmond birdwing butterfly. In spite of his hectic schedule Cody took time out to write the following article for our newsletter.

Paul Wright also allowed us to publish his stunning photo of a male Richmond birdwing.

We extend our thanks to both Cody and Paul for their generosity.

… and we present the following article for your enjoyment!

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Bringing back the Richmond Birdwing Butterfly to Brisbane

Author:  Cody Hochen

The plight and recovery of the Richmond Birdwing Butterfly is well known amongst Wildlife Conservation Partnerships Program (WCPP) and Moggill Creek Catchment Group (MCCG) members.

From being a common sight in the streets of Brisbane to becoming locally extinct in just over 100 years, the Richmond Birdwing Butterfly has become a flagship species for recovery in south-east Queensland.

Most MCCG members would know someone who has been involved in some capacity, most notably, Dr Don Sands and Dale Borgelt who have been there from the beginning.

Dr Sands has taught me a lot and has been the driving force behind the recovery and mass planting of Pararistolochia praevenosa (Richmond Birdwing Butterfly Vine) throughout its range. These plantings have led to a marked recovery of existing populations on the southern Sunshine Coast and the Gold Coast and its hinterland ranges. Despite similar plantings in Brisbane, Richmond Birdwing Butterflies are yet to recover.

To build on the 30 odd years of work from many enthusiasts, WCPP started a project called ‘Bringing back the Richmond Birdwing Butterfly to Brisbane’ in March of 2017. With over 50% of bushland in Brisbane on private properties, we are in the ideal position to work with some of our 700 WCPP properties throughout Brisbane to help achieve our goal.

With the help of WCPP members, Richmond Birdwing Conservation Network (RBCN), MCCG, Habitat Brisbane Groups and Dr Sands our first goal was to find what vines had been planted and ground truth them.

Over 6 months we located 1100 Pararistolochia praevenosa on private and public land, mostly in the western suburbs of Brisbane. It was interesting to find them spread in a corridor throughout the entire western suburbs all the way from Chelmer to the Gold Creek Reservoir.

Finding these vines allowed us to create a database and in-turn create a mapping platform in Atlas of Living Australia of existing vines. This map also allowed us to identify gaps in the corridor and find suitable properties with the right habitat type in the area to help fill the gap.

Our aim is to have a core site every 2 – 3 kilometres within this corridor.

©  Paul Wright

In the past small populations in Brisbane have relied on one or two isolated sites to survive. This has resulted in “in-breeding depressions” which have led to local extinction. Having vines spread throughout a corridor would allow female butterflies to travel throughout Brisbane without having to rely solely on laying their eggs on one isolated food source to survive.

So far, adding to the vines found, we have planted a further 330 vines on WCPP properties. These have been either to bulk up smaller patches of existing vines or create a new ‘core site’ in a gap in the corridor. Being a specialised vine that likes constant moisture and small doses of sun, it has been a difficult task finding appropriate sites.

After plenty of research and working with property owners to plant the vine we have bought the number of vines to 1430 spread across 52 WCPP properties, 7 Habitat Brisbane sites and 1 Brisbane City Council Reserve in Brisbane.

Our hope is to join up with current and future plantings in other councils both north and south of Brisbane. Discussions are under way to create a similar corridor from Samford, north to existing populations of the butterfly west of Caboolture and also throughout the Logan Council, south to an isolated population in Ormeau.

Like Brisbane, these plantings are to boost numbers as well as add to natural occurring populations and help existing populations of the butterfly move from isolated areas and spread throughout South-east Queensland.

As well as fragmentation and inbreeding, another threat to Richmond Birdwing Butterflies is the introduced exotic vine Dutchman’s Pipe (Aristolochia elegans).

This close relative to Pararistolochia praevenosa, Dutchman’s pipe is deadly to Richmond Birdwing Butterflies, tricking females to lay eggs on them and killing the young larvae. Unfortunately, Dutchman’s pipe is prevalent throughout the western suburbs of Brisbane and grows in similar rainforest/riparian habitat to the Birdwing Vine.

Collecting information on the sites on which Dutchman’s pipe occurs and working with WCPP members to control this invasive vine has been a part of the project.

After a long dry spell, we are waiting for more rain to plant another 100 vines in the western suburbs and to the north and south of Brisbane to help fill in the gaps.

We hope to continue to plant 100 vines a year as well as work with WCPP members to maintain their existing vines and tackle the ghastly Dutchman’s pipe. Maintenance involves fertilising, initial watering and continual watering during dry spells.

We are privileged to be in a position to help build on the 30 years of the recovery of the Richmond Birdwing butterfly in Brisbane. It is positive to be working to a plan and we feel confident that this stunning butterfly will once again call Brisbane home in the near future.

For more information about butterflies in our catchment, please click here.

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