Ecology of the Neck

Bruny Island
The neck is just such an incredibly diverse place.

To the west of the neck, you have Simpson’s bay, which is a very productive marine environment. It has an incredibly diverse shallow marine fauna including school shark, stingrays, skates, flathead, a variety of small fish. If you paddle a kayak out there, you can sometimes see almost a carpet of stingrays and skates. It’s amazing. You keep looking down and that’s all you can see.

Dusky Flathead
Dusky Flathead - Image: Placeholder
The neck is a great place for birds. Much more than just a penguin colony. The penguins are important. Yet the two species that are often focussed on here – Penguins and Shearwaters – probably 10% of people who come here see them. On the other hand, I think we’ve counted 14 or 15 different bird species here in one day by just standing here and having a look. 

You look out there and you can see all these different types of birds. There are two Peregrine Falcons that frequently sit on the wires down near the neck, just waiting for the starlings to show their heads. You’ve also got Silver Gulls, Pacific Gulls, New Zealand Kelp Gulls, Pied Oystercatchers, Sooty Oystercatchers, Falcons, the Australasian Grebe, the Forest Raven, the Hooded Plover, Double-Banded Plover, Red-Capped Plover, Swans.

The Penguins are at the neck 12 months of the year. Most of the year, when it is not breeding season, they’re out at sea and might only come ashore once a week, once every five days or so, because they’re not nesting, they move a bit further offshore, because the amount of food inshore is not that high.

They chase small bait-fish and shrimps and so on. Most of the Penguins frequent the ocean side of the neck beach. There are some on the Channel side. They built some tunnels under the road at the neck for the penguins, but we haven’t seen much evidence those tunnels are being used.

The vegetation at the neck once suffered very badly – it used to be burnt regularly, cattle used to graze on it, the dirt road’s dust used to clog up the pores on the plants, all of those things. The vegetation is recovering quite well now though. There’s some healthy regrowth of vegetation along the neck including native species such as Tea-Tree and Banksia marginata. A lot of the ground grasses are introduced pasture species from the cattle grazing days, and there’s also Marram grass, another introduced species.

You also have some mammals that frequent the neck, such as the occasional wallaby, pademelons, possums and quolls. The Eastern Quoll population on north Bruny is relatively prolific – because there are no foxes, only a small feral cat population, and not much competition from rabbits. Quolls are omnivorous – so will eat berries, fruits and small lizards and other small animals. They’ll eat just about anything!

Crina miriam cretu DE6yh Zy G8b E unsplash
Little Penguin: Image by Crina Miriam Cretu on Unsplash
I think we’ve counted 14 or 15 different bird species here in one day by just standing here and having a look. You look out there and you can see all these different types of birds.

Bob Graham
Bob Graham
Bob Graham is a professional geographer and convenor of the Bruny Island Environment Network


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