Sunshine Coast Birds

Birding and other wildlife experiences from the Sunshine Coast and elsewhere in Australia - and from overseas - with scribblings about travel, environmental issues, kayaking, hiking and camping.

Thursday, 12 September 2019

Hiking in Mapleton National Park

White-eared Monarch
I did a 20-kilometre hike yesterday through Mapleton National Park in the Sunshine Coast hinterland's Blackall Range. I started on Delicia Road at the trailhead for the track to Gheerulla Falls, heading west to Thilba Thalba camping ground and beyond to 480m, the highest elevation for the day. Then it was down the steep escarpment to Gheerulla Creek, following the creek up the valley eastwards to the falls and back to Delicia Road.

Open forest, Mapleton National Park
The hike goes through some nice patches of rainforest, wet sclerophyll forest and eucalypt woodland. The creeks aren't running due to the current dry spell and conditions are very dry. I didn't see a single (other) human being or a single Noisy Miner all day! Images of scenery and birds seen along the way here. The hike started at 7.30am and finished at 4pm. Elist.

Looking towards the Blackall Range ridgeline

Striated Thornbill

Paradise Riflebird

View from near Thilba Thalba

Rocky escarpment above Gheerulla Creek

Looking towards Kenilworth Bluff and Mary River valley

Gheerulla Creek 

Eastern Spinebill

Gheerulla Creek

Marbled Frogmouth at its day roost

Wonga Pigeon


Friday, 6 September 2019

Imbil State Forest: A response to critics in pictures

Rainforest stream in Imbil State Forest

Queensland's Liberal National Party opposition is in the forefront of criticism of a plan I proposed recently to protect and propagate subtropical lowland rainforest in the 21,000ha Imbil State Forest in the Sunshine Coast hinterland. The state Environment Minister, Leeanne Enoch, has given an undertaking to consider the proposal, which would involve the cancellation of logging and grazing leases to allow hoop pine plantations to regenerate as lowland rainforest. Subtropical lowland rainforest, a critically endangered habitat, occurs naturally in the state forest.

The LNP joined former Queensland Forestry chief executive Gary Bacon – backed by lop-sided reporting in the local Gympie Times newspaper - in attacking the proposal; it was variously described as a “thought bubble” and the work of “green nutters” and “left-wing zealots”. LNP shadow agriculture minister Tony Perrett claimed the proposal, which he had not seen, was based on “deliberate fabrications” and had “manipulated the truth”.

Tony Perrett
Perrett and Bacon did their utmost to undermine the basic premise of the proposal: that left alone, the plantations will revert to subtropical lowland rainforest, the habitat that occurred there originally before it was cleared to make way for plantations. I returned to Imbil State Forest last week to check out how older stands of hoop pine plantation were faring. I've reported separately that more than half the bird species I recorded during the visit were in plantations as well as in remnant rainforest patches.

Mature hoop pine plantation, Imbil State Forest
Images in this post show clearly that hoop pine plantation, when it has not been logged for a considerable time, has an extensive understory of rainforest plants. These plants are seeded from adjoining rainforest remnants. It's no surprise that the older plantations resemble closely adjoining remnant rainforest.

Hoop pine plantation with rainforest understory, Imbil State Forest
The old plantations I saw are well on their way to reverting to subtropical lowland rainforest in accordance with predictions from various experts, including respected landscape ecologist Peter Stanton and botanist Michael Olsen. They are soon to be logged, as they have been periodically over the past century since plantations were established at Imbil.

Hoop pine plantation with rainforest understory, Imbil State Forest
Gary Bacon claims that if left alone, the plantations would spiral into a “weed, pest and fire haven junk heap”. Bacon is a forestry scientist: he is not a zoologist, or a botanist, or an ecologist. Experts in these areas who support the proposal know a great deal more than Bacon about rainforest regeneration.

During my visit to Imbil State Forest, I saw decades-old plantations that were anything but the nightmarish scenario painted by Bacon. Yes, there was a good deal of lantana along the plantation fringes, but that introduced weed occurs throughout the state forest and has been there for a very long time. (Ironically, it provides good cover for the rare Black-breasted Buttonquail, which is restricted to subtropical lowland rainforest; I found numerous buttonquail platelets in the pine plantations.)

Hoop pine plantation and contiguous rainforest, Imbil State Forest
Buttonquail platelets in hoop pine plantation, Imbil State Forest
Older plantations shared a shady canopy with adjoining rainforest, reducing sunlight penetration and therefore the potential for invasive pest vines such as cat's claw to flourish. The proposal envisages nothing more that what is already the situation in many pockets of the state forest, but on a wider scale that would be sustained. It is ludicrous to suggest that mature plantations would become a pest-ridden “junk heap” if left unlogged, as Bacon asserts.

Subtropical lowland rainforest, Imbil State Forest
Indeed, some of the recently logged pine plantations in the state forest are not a pretty sight. Trees are logged deep into gully lines and rainforest streams in places are polluted by soil run-off. Piles of fallen trees that were not the targeted hoop pine were commonplace.

Logging to gully line, Imbil State Forest
 Native non-plantation trees in remnant forest patches, such as bunya pine and silky oak, were marked by loggers. The recreational value of popular places such as Charlie Moreland Park and Stirling's Crossing has been marred in recent months by a steady stream of logging trucks.

Marked Silky Oak and Bunya Pine in rainforest remnant, Imbil State Forest

Stirling's Crossing
In June I found a pair of Masked Owls in an Imbil hoop pine plantation. This is one of several rare and/or cryptic species that appear to be quite at home in plantations. The image below is how the owl site looked last week.

Masked Owl in June in hoop pine plantation, Imbil State Forest

Masked Owl site last week
It was Tony Perrett's LNP that unleashed grazing in state forests during the former Campbell Newman-led government. Numerous cattle were seen in Imbil State Forest last week, many feeding in and around the edges of remnant patches of lowland rainforest. Apart from their direct impact on native vegetation, the cattle would likely be a significant source of invasive weed dispersal.

Cattle, Imbil State Forest

Cattle, Imbil State Forest
Perrett claims that if implemented, the plan would destroy the economic viability of the region's timber industry. Perrett echoed Bacon's assertion that the plantations, if left alone to regenerate, would be “overrun by invasive pests and weeds”. Perrett described the proposal as “outrageous and highly destructive” and said it was based on “deliberate fabrications”; he didn't outline what those fabrications were.

After I pointed out to Perrett that his assertion about deliberate fabrications was defamatory, he publicly withdrew the remark. As for his claims about the timber industry, Perrett knows very well that in his Gympie electorate there is an abundance of hoop and other pine plantations outside Imbil State Forest that would be not affected by this proposal.

Logging in Imbil State Forest
About 40 per cent of the 21,000ha Imbil State Forest is pine plantation. That is about 2.4 per cent of the 330,00ha of pine plantation in Queensland held under lease by timber company HQ Plantations. For its part, the company has an open mind on the proposal. HQP said it is open to discussion and required further information - a far more measured response than Perrett's knee-jerk tirade.

Logging in Imbil State Forest
Perrett's rambling attack says a good deal about the LNP's environmental credentials. The Newman government scrapped Labor's tree-clearing laws and opened up extensive areas of protected state forest to logging and grazing. The LNP has yet to learn it will struggle to regain power while it caters primarily to the development-at-all-costs mentality of Perrett and his fellow rural Nationals.

Bunya pine in remnant rainforest, Imbil State Forest

Giant fig gree in remnant rainforest, Imbil State Forest
I'm aware that a few people are concerned that the Imbil State Forest proposal might detract from the so-called Yabba Links plan to expand Conondale National Park. However, several groups have opted to support both, arguing simply that there is no reason not to. Nobody is expecting or demanding that the timber industry in Imbil State Forest be completely shut down in the forseeable future.

Rather, it's important to get a discussion going about a plan to restore subtropical lowland rainforest on a large and sustainable scale. Private landholders are replanting small patches, and community-minded groups are removing vines and other weeds from remnant rainforest patches. These are worthy activities but they won't bring the rainforest back. Perhaps a good starting point would be a trial in Imbil State Forest; a reasonably sized area of older plantation of about 300-500ha adjoining remnant rainforest could be left unlogged and monitored.

Young hoop pine with native forest in background, Imbil State Forest

Recently logged plantation adjacent to remnant rainforest, Imbil State Forest
 On a lighter note, among the abundant birdlife last week were some nice frogs, like this Cascade Tree-Frog, along streams in mixed hoop pine and rainforest. The endangered Giant Barred-Frog was present in small numbers.

Cascade Tree-Frog, Imbil State Forest

Thursday, 29 August 2019

Birds in the pine plantations of Imbil State Forest

Paradise Riflebird, Imbil State Forest
Following the submission of a proposal to the Queensland Government last week to convert Imbil State Forest in the Sunshine Coast hinterland to a conservation park, I spent some time surveying birds in its hoop pine plantations this week. The Queensland Environment Minister, Leanne Enoch, has undertaken to investigate the proposal, which would scrap logging and grazing leases in the 21,000ha state forest to allow plantations to regenerate as subtropical lowland rainforest, a critically endangered habitat.

I spent seven daylight hours and two hours of an evening checking out plantations and contiguous rainforest remnants in the north-eastern sector of the state forest. The area extended along forestry roads from Stirling's Crossing to near Brooloo. Not far south of Stirling's Crossing is a stand of mature hoop pine plantation that has not been logged for many years; I focused a good deal of attention here.

Of 57 species recorded, more than half – 31 species – were seen or heard in hoop pine plantations. Most of the others were in remnant rainforest adjoining pine plantations. Some species, such as Russet-tailed Thrush, appeared to be equally at home in rainforest and in adjoining pine plantation. 

Russet-tailed Thrush, Imbil State Forest
Others, including Noisy Pitta, were primarily in rainforest but calling sometimes in pine plantation. Paradise Riflebird was seen both in rainforest and nearby pine plantation. 

Noisy Pitta, Imbil State Forest

Paradise Riflebird in Imbil State Forest hoop pine
Crested Shrike-tit was in eucalypt forest adjoining a plantation.

Crested Shrike-tit, Imbil State Forest
Five species were noted only in plantations. They included Yellow-tailed Black Cockatoo and, among recently planted hoop pine, Variegated Fairywren and Red-browed Finch.

Red-browed Finch, Imbil State Forest

Yellow-tailed Black Cockatoo, Imbil State Forest

I found quite a few buttonquail platelets in the plantations that very likely were made by Black-breasted Buttonquail. I saw a female Black-breasted Buttonquail in vine scrub adjoining a pine plantation.

Black-breasted Buttonquail, Imbil State Forest
Red-necked Pademelons were common in both rainforest and pine plantations. 
I found a Marbled Frogmouth in rainforest with hoop pine plantation in close proximity. The rainforest remnants are so small that such species would likely feed in old-growth plantation as well. This site is just 130m above sea level; it is unusual to record Marbled Frogmouth in this region at such low altitudes. I heard a Masked Owl calling in the same area where I recently saw four owls.

Marbled Frogmouth, Imbil State Forest
On the subject of owls, soon after the Masked Owl sightings I went owling around Bli Bli and Ninderry with Chris Corben. We saw four Eastern Grass Owls at three sites as well as an Eastern Barn Owl.

Barn Owl

Eastern Grass Owl
It was clear from this week's foray in Imbil State Forest that mature hoop pine plantations with adjoining rainforest remnants provide excellent habitat for wildlife. See here for elist.

Variegated Fairywren, Imbil State Forest

Monday, 19 August 2019

Imbil State Forest - A plan to to bring back endangered lowland rainforest

Black-breasted Buttonquail
The Queensland Government is considering an unusual proposal to stop logging pine plantations and grazing in a Sunshine Coast hinterland state forest to create a major reserve of a critically endangered habitat. Recent media coverage of the plan can be found here.

If the plan is implemented, it would be the first time in Australia that extensive areas of plantation were allowed to revert to native forest. The 21,000-hectare Imbil State Forest would become the first substantial area of subtropical lowland rainforest habitat to be protected.

Subtropical lowland rainforest once covered large areas of south-east Queensland and north-east NSW. In one of Australia's great environmental missteps, most was cleared in the nineteenth century for agricultural development. More recently, especially in Queensland, large areas were bulldozed for pine plantations, particularly native Hoop Pine Araucaria cunninghamii.

Today, just a tiny fraction of the original area of lowland rainforest survives. The forest once extended south from Maryborough in Queensland to Grafton in New South Wales. Subtropical lowland rainforest was listed federally as a critically endangered habitat in 2011.

With the forest has gone the many plants and animals that called it home. Most notable is the Coxen's Fig-Parrot, which once occurred across the region but has not been recorded with certainty since the 1980s. It was found nowhere but in the lowland rainforests of south-east Queensland and north-east NSW. The Black-breasted Buttonquail, listed nationally as Vulnerable, is similarly restricted to remnant lowland scrubs of the region. So too is the impressive Giant Barred Frog.

Many other rainforest animals, such as several species of fruit-eating pigeons and some frogs, are much more numerous in the surviving lowland rainforest remnants than in the better protected highland rainforests that are found in areas such as Lamington and Bunya Mountains national parks. The wildlife of lowland rainforest is struggling to survive in remnant forest patches. Land care groups battle to keep the forest patches free from invasive vines and other introduced weeds.

Original extent of subtropical lowland rainforest

Lowland rainforest typically includes a greater variety of trees, vines, ferns and other native vegetation than highland rainforest, and many plant species are restricted to it. Over the region in which it occurs, the forest has the most diverse tree flora of any vegetation type. Subtropical lowland rainforest is today found only in small, isolated patches. There are no substantial reserves of the habitat. It's not too late for that to change, however.

The foothills of the Conondale and adjoining mountain ranges in the Sunshine Coast hinterland were once clothed in lowland rainforest, the drier kinds of which are often referred to as vine scrub. The remnant scrub to be found in this region today contains the largest surviving populations of Black-breasted Buttonquail and good numbers of many other lowland rainforest animals and plants that have disappeared from elsewhere. 

Lowland rainforest remnant, Imbil State Forest

Most of the lowland rainforest in the region has been converted to Hoop Pine plantations which are extensively interspersed with remnant forest patches. Hoop Pine is one of the dominant native trees in subtropical lowland rainforest. When stands of Hoop Pine plantation are left unlogged, they are colonised by native vines, palms and other plants from adjoining remnant habitat. Wildlife such as birds of the forest understory and many mammals and reptiles will happily inhabit the plantations. Eventually, if left alone, the plantations will regenerate as subtropical lowland rainforest.

About half the native vegetation of Imbil State Forest has been converted to Hoop Pine plantation. The remainder is a mosaic of open forest and what are likely the largest tracts of surviving subtropical lowland rainforest. Fortuitously, reasonable numbers of tall trees with hollow logs, needed by animals such as possums and parrots, survive in the remnant forest. The rainforest patches include many large fig trees, a major food source for many birds. Despite consisting substantially of pine plantation, Imbil State Forest is an excellent site to find rare or cryptic wildlife such as the Platypus, Black-striped Wallaby, Masked Owl and Black-breasted Buttonquail.

In a proposal submitted this week, the Queensland Government is being asked to stop the harvesting of plantation timber over the whole of Imbil State Forest and declaring the state forest a conservation park. Under this plan, the clearing of further remnant native vegetation would stop and pine plantations would be left alone to be allowed to regenerate as subtropical lowland rainforest; they would resemble the original forest more quickly than might be appreciated.

Queensland botanist Michael Olsen has no doubt the plantations, if left alone, would readily revert to rainforest. He says: “The Hoop Pine plantations have increasing biodiversity with age, particularly with native plant species, after being planted or logged. This is most apparent where they are located on former rainforest sites embedded in, or contiguous to, remnant rainforest. This is the case with the majority of the plantations in Imbil State Forest…. The protection of such a depleted biodiverse community should be a priority from any perspective.” 

Recently planted hoop pine with rainforest and eucalypt forest in background, Imbil State Forest
Respected landscape ecologist Peter Stanton, the Australian Wildlife Conservancy's land management officer, is using Hoop Pine as the primary tree to rehabilitate 27 hectares of rainforest on the Atherton Tableland. He says if remnant rainforest occurs near plantations, they will regenerate with the help of seed dispersal: “This is a great idea and its aims are quite achievable. If I was trying to rehabilitate rainforest I would always start off with Hoop Pine. With the pines in, it doesn't take much to get the rainforest to come up underneath.”

Imbil State Forest is an important recreational resource. It includes Charlie Moreland, the most popular bush camping area in the Sunshine Coast hinterland. The area around Charlie Moreland, at the southern end of the state forest, is a mosaic of Hoop Pine plantation, lowland rainforest and open forest that is typical of the forest more broadly. It has long been regarded as one of south-east Queensland's primary bird-watching destinations. At the northern end of the state forest, Stirling's Crossing is popular with visitors and is one of the best places in the region to see Platypus. 

Platypus in Imbil State Forest

The Imbil plantations, the first to be established in Queensland in the early-1900s, are logged by HQ Plantations. They comprise a small proportion of the 330,000 hectares of pine plantation managed by the company in Queensland, including in nearby state forests such as Jimna and Amamoor. Losing logging access to less than 5 per cent of the state forests would have little impact commercially, and could be compensated for by the enhanced opportunities for ecotourism offered by a conservation park.

David West, group manager stewardships with HQ Plantations, says that while the company was open to discussion, “we would require more detailed information before we could offer any thoughts on this proposal”. He declines to put a value on the company's Imbil leases or speculate on whether HQ Plantations would be entitled to compensation for the loss of the leases. 

Masked Owl in Imbil State Forest

The area could eventually be added to the adjoining 35,658-hectare Conondale National Park, increasing its size by more than 50 per cent and adding enormously to the park's already impressive biodiversity value. Imbil State Forest is divided by Yabba Creek Road and the creek of the same name. Both portions, the 4,000-hectare Imbil State Forest 2 in the north and the larger Imbil State Forest 1 south of Yabba Creek, are included in the proposal.

The Queensland Government is considering an unrelated submission by the National Parks Association of Queensland to link the Conondale and Wrattens national parks. Called the Yabba National Parks Link proposal, it would add 20,000 hectares to the parks by linking them through the acquisition of remnant native forest areas in several state forests, including the western part of Imbil.

The proposal would help protect 18 threatened wildlife species and 15 ecosystems listed as Endangered or Of Concern. It would not interfere with the harvesting of pine plantations and while worthy, does not include those parts of Imbil State Forest that are particularly rich in wildlife populations.

Under the 1999 South-East Queensland Forestry Agreement, a good deal of state forest in the region would eventually have been made national park, but the agreement was torn up by the former Campbell Newman-led Liberal National Party Government. It has not been restored by the Palaszczuk Labor Government.

Recently logged hoop pine, Imbil State Forest
The Newman Government also introduced widespread grazing leases over state forests, including Imbil, which have not been revoked. Serious damage is being done to remnant rainforest patches in Imbil State Forest by large numbers of cattle which roam freely over much of it. Grazing would be banned if the forest was made a conservation reserve.

The state forest is fortunately free of mining permits, which can be a major impediment to the declaration of new nature reserves in Queensland.

Former Queensland Environment Minister Pat Comben backs the plan to convert Imbil State Forest to a conservation reserve, saying subtropical lowland rainforest urgently needs protection: “As Queensland doubled its national park estate in the early 1990s, we protected areas such as the Mitchell Grass Downs and Mulga Lands. Now the challenge is to ensure the biodiversity of south-east Queensland is similarly protected before it is too late.”

Leading zoologist Glen Ingram describes the destruction of subtropical lowland rainforest as an environmental disaster. He says: “It was a mindless series of mistakes and the impact on our fauna and fauna was devastating. The return of the Imbil forests would be an important step towards rectifying those mistakes.”

Sunshine Coast Environment Council co-ordinator Narelle McCarthy also supports the plan: She says: “With so much already lost, particularly on the coastal lowlands, it is extremely important to retain and enhance what patches remain. Imbil State Forest offers such an opportunity.”

BirdLife Australia Sunshine Coast convenor Ken Cross is enthusiastic about the proposal, He says: “We have lost too much of this habitat already and sadly it may not be good enough in the long term just to protect the area that is still left. We would support this plan to utilise existing native plantations to grow the area of available lowland rainforest and increase the available habitat for many of our endangered bird species.” 

Logging hoop pine, Imbil State Forest

Adding their voices, Protect the Bushland Alliance co-ordinator Sheena Gillman and BirdLife Australia Southern Queensland convenor Judith Hoyle say: “The value of these particular forest areas is not only as significant biodiversity reserves but as ecotourism hot spots within easy reach of Brisbane and the Sunshine Coast. Appropriately managed, they are of financial value to local commerce and rural industry. We support this endeavour to have these forest areas considered for conservation and heritage protection.” 

Charlie Moreland Park, Imbil State Forest
The proposal was submitted last week to Queensland Environment Minister Leeanne Enoch and Agricultural Industry Minister Mark Furner. In time, other areas of Hoop Pine plantation may be allowed to revert to subtropical lowland rainforest.

Ms Enoch says the proposal will be considered by the government: “The Queensland Government is always open to considering suitable state land for its conservation value, including as protected area. The government is currently developing a new Protected Area Strategy, which will help evaluate where lands may be available to grow Queensland’s protected area estate. In relation to Imbil, I understand any proposal to convert all or part of this plantation to protected area status would need the agreement of HQ Plantations.”

See here for more on birds found in the hoop pine plantations.

You may wish to register your support for the proposal to make Imbil State Forest a conservation park by flicking an email to the state ministers. Please note, if the links don't work, copy and paste the email addresses:

Hon Leeanne Enoch,
Minister for Environment,

Hon Mark Furner,
Minister for Agricultural Industry,

Imbil State Forest