Tag Archives: Dominican Gulls

Have the invading Seastars been discovered by a mortal enemy?

Today I watched a family of Dominican Gulls at Howrah Beach on the Derwent River.

When the temperature rose, I meandered off towards the Derwent River beckoned by the thought of a peaceful walk along a beach (albeit one that I walked on an earlier stage of my trek from the mouth to the source of the River). By the time I reached the end of Bellerive Beach I was feeling very good about the world and so I continued around the point and down onto the people-less Howrah Beach.

The only life was a pair of adult Dominican Gulls and their three immature offspring fishing.

Two surprised me.  From a distance I could see that one adult and one immature were active on the sand where the wash of gentle waves covered their feet from time to time. Each had food of some sort which they couldn’t seem to swallow.  How they tried!  When I walked closer, it was clear both birds were playing with exotic Seastars, with their five brightly orange-coloured arms.

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The immature bird played with a tiny starfish, while the adult focused on a much larger version.  While I watched, both birds battled with their prey, sometimes getting it into their mouth then usually it was disgorged immediately. The shape of bird throats and the shape of the food source were seemingly incompatible. Apart from the challenge of five thick arms which are not particularly pliable, the surface of the starfish is a little knobbly, so I could not believe the birds would have any success getting them ‘down the hatch’.

But then my mouth dropped open in amazement. The immature bird suddenly swallowed his Seastar.   Gulp.  And s/he waded off looking for more. Now that was a feat!

You can read more about these invading starfish in earlier postings at: https://walkingthederwent.com/2015/03/31/pacific-seastars-are-multiplying-in-kangaroo-bay/; https://walkingthederwent.com/2014/09/14/northern-pacific-seastars/; and https://walkingthederwent.com/2014/09/05/stage-2-on-492014-mitchells-beach-email-4-of-14/.

After today’s experience, I wonder whether the Dominican Gulls are finding these Seastars sufficiently tasty so that they will seek them out deliberately.  Perhaps these Gulls will become the natural predator to help reduce the Seastar plague on our native species.  But it looks like hard work to me. Not a comfortable swallow.

Discovering the suburb of Old Beach – 7th stage of my walk along the Derwent River

At 12.40pm I reached the town sign for Old Beach at Cassidy’s Bay. The Bay was covered with ducks of every age.  Families of ducklings are always a pleasure to see. Seemed like a safe haven for them.  Tall grasses grew into the water but there was no beach.

I continued walking along the highway, passed the turn off to the Baskerville raceway, and was eventually forced down into a clay sogged ditch almost until I reached the roundabout at 12.50pm.  At the roundabout, with the hilly section of Old Beach up on the right, the choice was to continue on to Bridgewater or turn left into Fouche Avenue. I turned left to the lowlands and walked through a reasonably affluent area. Back on proper footpaths. Just before 1pm I reached the Old Beach Neighbourhood Store claiming to serve hot food 7 days a week.  I didn’t enter to check.

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By 1.03pm, after passing a house outlandishly decorated for Halloween, I came to the end of the road.  It seems like one of those roads which will connect up with a street coming from the other direction at some other time. Everywhere I looked, new houses were being built so that I feel confident roads will connect sooner than later. I walked through the open paddock in the photo below in order to reach the ‘golden’ pathway in the distance which I assumed might lead me onwards next to the Derwent River.

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At 1.06pm I reached the lower path, which was appropriately signposted as the Old Beach Foreshore Trail, and enjoyed seeing more black swans, swooping swallows, flocks of starlings, and the usual screaming plovers. Closer to the water the path divided.  To the left it returned to Cassidy’s Bay (although I saw no signs of a path when I was there), to the right the path would continue to the Jetty at Jetty Road.  The spot where I stood was named the ‘Calm Place’.

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The photo above faces south across the lowlands of Old Beach (which doesn’t seem to have a beach), and provides a view of Mount Direction in the distance.

I headed north by taking the right hand trail. Not long after, on the right hand non River side of the path, I saw a tiny man-made lake, with its quota of swimming ducks and a rusting large sculptural tower on a central island with two Dominican Gulls on top (the expression ‘kings of the castle’ came to mind), amidst a stack of new houses and others being built. The sign on the fence worried me.

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I was concerned that because the land was so low and the lake depended on a levee to contain the water, any River flooding could be of great concern to the new property owners.  I wondered how much of that being built on was reclaimed land. I am surprised the local government allows new buildings here. With global warming increasing the sea level, these houses won’t be around in hundreds of years.

Blue skies opened above Mount Wellington in the distance but heavy clouds sat overhead.  Spits of rain persisted off and on for the rest of my time at Old Beach.  But it was time to have lunch. In the absence of any seats or rocks or other raised area, at 1.20pm I sat on the grass beside the Foreshore Trail, emptied my pack, and started munching as I absorbed the details of my low lying surroundings.  I could see heavy rain clouds that darkened the day travelling across the Derwent from the Mount Faulkner Conservation Area on the western shore.

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At 1.35pm I was on my feet and continuing along the path, passing an alternative walk to Sun Valley Drive, and spotting a pair of native hens pecking ahead on my path.  A private fence made from large pieces of driftwood festooned with creeping bright flowering geraniums, caught my attention.

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At 1.43pm I arrived at the Old Beach jetty

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where I found an interpretative panel explaining some of the early 19th century history associated with the location of the jetty.

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As early as 1821, an Inn was established near the current jetty, and people would ferry across the Derwent from the western side of the River.

This 7th stage of my walk was coming to a quick close.  I knew a bus would be travelling along Jetty Road at 2pm, and that the next service would not be in the vicinity for another couple of hours. I had wanted to finish walking through all of Old Beach before I finished this stage, but the potential for a long wait for a bus inclined me to cut the anticipated walk short.  I walked along Jetty Road and waited at a bus stop.

Metro bus 114, destined for the Glenorchy Bus Mall on the western shore, picked me up.  I did not travel the entire way but if I had, I would have needed to catch a Hobart city bus to reach the CBD, then a bus to take me back to my home suburb of Bellerive on the eastern shore. A long way. A long time. From Old Beach there are no bus services travelling along the eastern shore.  All the buses travel to the northern city of the Greater Hobart Area of Glenorchy via the Bowen Bridge. Since I live in Bellerive on the eastern shore, I resolved to try Plan B. I proposed to catch a bus from Glenorchy to Hobart via the eastern shore and close to the Bellerive area. Once over the Bowen Bridge from Old Beach, I got off the bus at the first stop which was outside the Elwick racecourse at 2.15pm. I crossed the road and waited in a bus shelter for Metro bus 694. As the rain started to pour in earnest at 2.35pm, the bus arrived. Phew!

I loved the return trip. While again on the Bowen Bridge I looked northward and could see where I had walked earlier in the day. Ahead and looming over the land, was Mount Direction. Looking southward I could see the Cleburne Spit was empty of cars and people, the suburb of Risdon looked quiet, and a thick eddy of smoke rose from behind Risdon Cove. Closer to the area with the fire, a sweet wood smoke smell spread through the bus and reminded me of camping fires I have enjoyed in the past. That was a great conclusion. Memories of the immediate day and memories of the past coming together.

Now I am looking forward to preparing for and then walking the 8th stage of my walk along the Derwent River.  This next walk is likely to happen early next week, weather willing. Let the discoveries continue!

What did I see on the walk along the Derwent River from Rosny to the Tasman Bridge last Friday?

Previous posts have explained the route I walked and the bus services that supported my walk from Rosny Point to Geilston Bay last Friday. This and a further couple of posts will provide colour and texture to those bones.

Once off the bus around 9.20am, I walked through a light open forest of wattle, gum, casuarina and other trees and could see snippets of calm Kangaroo Bay to my left. The photo below looks across the Bay to Bellerive Bluff which was the official finish point of Stage 4 of the walk. The suburb of Tranmere with Droughty Hill above, appears in the misty distance (the location of Stage 3 of my walk).

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The beautiful Bay seemed like murmuring silk. Almost no breeze. The whoosh of cars on distant roads seemed oddly out of time and place.

The Clarence Foreshore Trail passes the inaccessible Rosny Wastewater Treatment Plant on the left.  From the Trail, occasionally rough gravel tracks led down making it possible to reach the water’s edge and I could see Dominican Gulls on the rocks and the occasional Pied Cormorant. Around 15 minutes after leaving the bus I reached the Rosny Point curve where the land left Kangaroo Bay and moved around to edge the Derwent River.  A few minutes later, a Trail sign indicated the Tasman Bridge was 1.7 kilometres further on. I was thankful for the Trail because the narrow rocky shore was strewn with sharp broken oyster shells; later on I watched a family of Pied Oyster Catchers preening and resting – obviously they had eaten their fill.

A few days ago I posted the story that the ‘navy had come to town’. The photo below looks across the River from a place between Rosny Point and Montagu Bay and shows the grey green HMAS Arunta to the left of the orange Aurora Australis Antarctic icebreaker. Oh, and by the way, I discovered the Commander of this naval ship was once responsible for the HMAS Derwent.

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Close to 10am, I reached the Derwent River corner of Montagu Bay.  Harsh sounds filled the air; very vocal wattle birds and the growling of power brakes used by large trucks on the Tasman Bridge. From here, I had the choice to walk 200 metres up to the Rosny Hill Lookout. However, I continued on towards the heart of Montagu Bay past a clutter of upturned dinghies partly hidden in the bushes by the shore. By 10.05am, I was out of the forest and soon passing Langdon’s Welding shop on the left with workers out repairing some boats. By the Trail, I noted a large nectarine tree filled with the start of new fruit and made a mental note to walk this way in December when the fruit should be ripe.

At Montagu Bay I was stopped by an elegant contemporary public sculpture (unknown artist) which I did not know existed.  Well worth a visit. This was the Memorial to those who lost their lives when the Tasman Bridge crashed in 1975. Have a look at the photo below.

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The idea is that you look through these circles to pin point the part of the bridge which collapsed.  An information board provided additional information on this tragedy.

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The view across the Derwent from Montagu Bay was magnificent.

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Public Toilets are located near the Montagu Bay Reserve parkland area. This area is one of many that are child friendly with kids play equipment for free use.

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300 metres along the Clarence Foreshore Trail after passing huge old pine trees, massive gums with fanciful ‘painted’ bark trunks, then the Montagu Bay Primary School on the right, I reached the Tasman Bridge which I walked beneath to continue towards Rose Bay. The time was 10.20am.

22 Aug 2014 Heading for the start of the first walk at Cape Direction – Posting 5 of 8

The photo below shows Cape Direction. To the left of the headland trees is a concrete bunker.

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Heading toward Cape Direction, I walked along a vehicular track eastwards and down onto the firm sand of the beach at Pot Bay.  Large Gulls either Pacific or Dominican patrolled the beach, letting a mix of Pied Oystercatcher and Sooty Oystercatcher birds have a run around.  The protruding flat sandstone rocks on the beach featured empty oyster shells.

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 At the end of the beach I clambered up the rocky earthy banks amidst a rich layer of fleshy vegetation that looked good enough to eat. I knew that the pigface plant with bright pink flowers open to the sun was edible, but what about the rest.

The photo below shows a swathe of blooming pig face on the Pot Bay side of Cape Direction.

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What did the original aboriginal people eat? I would be very interested to learn whether some of the other plants could be used as food.

I had been warned that most of the old gun placements on Fort Hill were out of bounds, and again a high mesh perimeter fence made that clear.  But I was able to wander towards the one remaining structure outside this fence – one without tunnels. I waded on through high grass and onto another vehicle track that lead uphill to the remains of a massive concrete gun placement structure.

The photo below shows the concrete structure. The Iron Pot lighthouse can be seen in the distance.

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As I wandered inside the structure, it made no sense to me, and with no information to hand I was left puzzling as to why it was surrounded on all sides by rock and earth so the soldiers would not have been able to see an enemy coming towards the Derwent leave alone fire on such a ship.  Perhaps I am the first non-defence services visitor (can that really be true?) and everyone else who has visited perfectly understands how the building was used. 

From this structure it was a short distance east to open and exposed Cape Direction – the starting point for my walk along the Derwent.  Opposite, almost linked to the mainland at low tide by a series of rocky reefs, was the Iron Pot in all its glory.

The photo below shows Mount Wellington above Hobart, past Cape Deliverance and taken from Cape Direction.

 Towards Cape Deliverance and Mt Wellington