Seebird survey on Little Broughton island group

Little Broughton and its neighbours

Little Broughton and its neighbors

By the end of September 2010 I’ve been working at a desk job for a few months and I was starting to get a cabin fever and an itch for some kind of wilderness adventure.  I did a bit of research on line to see what projects were around and one mission in particular seemed to be just what the doctor ordered: a three-day survey of seabird colonies on off-shore islands just off Nelson Bay. The survey was run jointly by NPWS of Hunter region and the Department of Environment and Climate Change of NSW, and enlisted the help of some volunteers (lucky for me).

The main point of this survey was to establish whether the Little Penguins (Eudyptula minor) breed on the islands and to map out the habitat of two species of Shearwater: Short-tailed and Wedge-tailed Shearwater. The islands that we were going to survey were uninhabited and we were the first people to land on them in the last 30 years. It is hardly surprising considering how dangerous a zodiac landing on wet rocks can be and how much effort it takes to survey just a few islands.

Australian fur seal

Australian fur seal

On the morning of the first day Susanne from NPWS’s Hunter office was waiting for me at the marina in Nelson Bay. We loaded my bags and some gear into the boat and set our sails for the unknown. The weather was absolutely beautiful and we saw plenty of wildlife from the boat: Australian pelicans, Australasian garnets, gulls, terns, and even some Australian fur seals, which were a new mammal species for me.

Australian fur seal on the rocks

Australian fur seal on the rocks

We picked up Nick from DECC and the other volunteers – they all arrived on a small inflatable zodiac that we consequently dragged onto our boat. So all was well, and we were approaching the first island on our itinerary – Little Broughton. Feral rats and rabbits have been eradicated from Little Broughton and the island’s ecosystem has been slowly returning to its native state. And as we approached the island, all I could see were the jagged vertical cliffs. This, however, was expected so we brought our boat as close to the cliffs as we could and lowered the zodiac into the water. We transferred a bunch of bags and equipment into the zodiac along with a few people and off they went.

Cliffs of Little Broughton island

Cliffs of Little Broughton island

Approaching Little Broughton

Approaching Little Broughton

The way a zodiac landing works, is you maneuver the zodiac so that it rides the wave towards the shore and when it reaches the closest point you jump off and (ideally) land on the rocks.  I was so worried about slipping on the rocks and cracking my head open or falling into the water and drowning that when my turn came, I leapt like an absolute natural and didn’t even wet my shoes!

The next challenge was to carry all of our gear up a nearly vertical cliff face. Though I have to say, actually doing it was not as exhausting as thinking about it and not wanting to do it.

No more than half an hour later we were on top of the cliffs, standing on pretty much the only flat spot on the island. So we figured we would set up camp there. But off course, being an off shore island, this was a nesting seabird paradise. The birds that occupy this island live in the burrows that they dig in the sand. So our camping spot was right in the middle of a shearwater colony. But since the birds are nocturnal, the only signs of their presence during the day were the actual borrows.

Little Broughton

Little Broughton

Well, we didn’t really take the time to sit around and ponder on the significance of camping in a seabird colony. Instead, we went off on our first surveying mission. The main thing we were looking for this time were the signs of penguins, so that we knew where to set up at night and count them as they emerge from the surf.

We tracked across the entire island in search of potential penguin landing sites. And while the island was not big, the rough terrain and near-pristine vegetation cover made for pretty hard going.  We were the first people in three decades to set foot on this island. And with rabbits gone, the vegetation went through a phenomenal growth stage, which in practice meant that we had to walk through waist-high tussock grass when we were lucky, or through a solid wall of gnarly bushes when we were not so lucky.  As an additional challenge, the sand underneath this vegetation was covered with abandoned nesting burrows that were impossible to see. So as I walked, every other step one of my feet would fall through one of those burrows and unless I was ready for it – I tripped and fell.  So just walking around was a pretty strenuous exercise. On the positive side of things, we found at least 3 spots with penguin signs so we were all set for the night watch.

The arduous walk around the island was not without its perks though. Almost every conversation was interrupted by one of us shouting out:  Look, whales!  Whales were breaching everywhere. They were traveling down to Antarctica from their breeding grounds in the subtropical coastal waters and most of the adult females had their calves with them. Mostly they were Humpback whales (Megaptera novaeangliae), but we also spotted a Southern Right (Eubalaena australis) female with a calf, which was another new mammal species for me. Other cool species present in large numbers were White-bellied Sea Eagles (Haliaeetus leucogaster). I saw these beautiful birds at Kho Chang in Thailand, but they were usually quite far away. Here they were everywhere.

Young Humpback whale breaching

Young Humpback whale breaching

Back at the camp site as we were having lunch the sand in front of my feet suddenly started to move in violent jerks. It felt like Satan was escaping from hell! But as it turned out, there was a bird burrow there and we must have trampled over it and collapsed some of the sand into it. With a great effort a grumpy-looking Short-tailed Shearwater (Puffinus tenuirostris) was digging itself out. It was hilarious. Nick got the bird out and was holding it while he was rebuilding the burrow, and half way through it he found another bird inside. So that was our first brush with sea birds at the camping site.

The two species of Shearwater that we saw on the islands are remarkably similar in appearance. They are particularly difficult to tell apart in the dark, when they are most active. The main difference between the two is their size. Wedge-tailed shearwater  is smaller and their beaks are also proportionately longer than those of Short-tailed shearwater . The two species also have distinct calls.

Short-tailed shearwater

Short-tailed shearwater

As the night approached, we took off for our respective penguin watching spots. Nick took the three of us girls volunteers to the first set of cliffs and we got assigned our ‘counting’ locations. Lucky me, I got the furthest one! Nick said: “OK, Margarita, so you start walking to your site” (which was naturally on the opposite side of the island!), “and beware of the thick patch of bush in the middle of the next slope. So climb up the ridge, go across the ridge and then climb down to the bottom of the cliff.” Sounds easy, but anyone who knows me is well aware that the sense of direction is not my strongest attribute. So there I was crashing through the tussocks and the bushes, walking across the ridge and then half sliding half crashing down to the rocky beach in the disappearing light. Good thing was, it was an island, so all I had to do was to follow the ocean – I couldn’t really get lost even with my phenomenal ability for doing just that. However, the bad thing was that the light was almost gone and I needed to be on the beach before dark. So I almost ran, whenever it was physically possible, as if I was about to lose in the final challenge of the Amazing Race. I made it with just a few seconds to spare.

Little penguin on the nest

Little penguin on the nest

As graceful as they are in the water, penguins appear very clumsy on firm ground. It was surprising that they picked the challenging terrain of Little Broughton for their nesting site. To get from the surf to their nests they had to assail at least 100 meters of an incredibly steep cliff face. It was fun watching them wobble up the slippery rocks. The night was still and quiet, the sky – studded with stars. This moment on the rocky beach on an uninhabited island was perhaps one of the most tranquil experiences in my entire wildlife watching career.

To avoid disturbing the penguins I turned my off torch and only switched it on briefly every five or so minutes to keep track of the penguins’ slow progress up the rocks. At one point I turned it on and there were two penguins sitting literally at my feet – one to the left and one to the right. In total only 4 birds emerged from the surf over 2 hours, meaning that there are at least 4 breeding pairs in that area.

Cliffs near penguin nesting sites

Cliffs near penguin nesting sites

Unfortunately, as relaxing as it was, sitting there in the dark watching the penguins, my navigating adventures were not over for the night yet  – I still had to make my way back to the camping site. As I started climbing up the cliff I came across one of the female penguins sitting on the nest. These birds have never encountered humans before and they were absolutely naïve of the dangers that some members of our species could pose. As it was, I could literally walk right up to the bird and pick it up. I didn’t off course.

So there I was again: walking alone in the middle of the night across an uninhibited island. I would have loved to be able to say that it was peaceful and tranquil, but in fact, it was a little spooky. The Wedge-tailed Shearwater (Puffinus pacificus) became active and to hear their eerie, ghost-like call while crashing through the bush alone in the dark wilderness is not an experience for the faint-hearted. The birds were everywhere: on the ground, on the bushes and in the air. The night was alive with the sounds of their activity. Each time I would trip and fall I came face to face with one of them. And amazingly they were not afraid of me.

Wedge-tailed shearwater

Wedge-tailed shearwater

Back at the camp site we had a quick dinner and went to sleep. The top of the island was very windy, so I didn’t bother with the tent and decided to sleep in my sleeping bag. That was the last time I made such a decision while sleeping in a seabird colony. Shearwaters were everywhere and one of them decided to renovate its burrow right next to my face. The bird was completely oblivious to my presence and kept throwing piles of sand in my face. All night long the birds were running around, walking all over me as if I was a just a pile of ground litter. As challenging as it was to sleep with all this activity around, I don’t think I have ever felt more ‘one with nature’ as I did that night. Being accepted by these birds as part of their natural environment was a very unique experience. To top it all off, at about 5 am, one of the birds jumped onto my head while I was still asleep and started singing its eerie song. I guess my head was not an ideal surface for a bird with webbed feet to sit on, so it kept sliding off, and as it did, it dug its claws into my scalp to get a better grip. When I woke up in the morning, I had sand in my mouth, in my ears, my eyes and even in my nose. My eyebrows looked twice as thick with all the sand trapped in them. And to add insult to injury it started to rain. We still had more work to do and now we had to do it in the rain.

Wedge-tailed shearwater

Wedge-tailed shearwater

First, Nick and I tracked across the island to another spot where he thought we might find more signs of penguins. The reason we did not investigate this area the day before was because it had some particularly treacherous chasms – not a good place to get stuck in the failing light. Even in broad daylight Nick chose to go for a look alone while I entertained myself watching whales and garnets as they darted head-first into the ocean hunting for fish. After about an hour of searching Nick was satisfied that there were no signs of penguins and it was time to return to camp. As we were climbing up a sandy patch, Nick accidentally stepped on a burrow and partially collapsed it. Fearing that there may have been a bird in the burrow we decided to excavate it and fix it up. And good thing we did. As Nick was digging the sand out, he first found an adult penguin there and then a tiny, not older than a couple of days-old chick. As I held the chick in the palm of my hand I was amazed how warm it was.  All it was – was just a tiny ball of fluff.

Penguin chick

Penguin chick

Next on the agenda was the mapping of shearwater habitat, which was also quite a challenging exercise given the terrain and the vegetation cover. To avoid having messy GPS tracks we first did reconnaissance walks to identify the boundaries of the ‘dug up’ areas and then walked the perimeter with the GPS units.

Gradually we worked our way through the morning and early afternoon. Once we finished mapping, we were done with Little Broughton. We packed up our camp and transferred all the bags and the equipment down to the zodiac landing site. By the time the boat arrived to take us to the other islands we were soaking wet from the rain, which had its positive side: we were not afraid to get wet on boarding the zodiac or on landing on the next island. We ferried all our staff onto the boat, hauled the zodiac onboard and set off for a short ride to the North Rock, where Susanna, me and Una (a fellow student from Macquarie University) were going to spend the next night, while Nick and Hanna  were going survey to the East Rock.

Sooty Oystercatcher

Sooty Oystercatcher

The landing on  North Rock turned out to be more adventurous then on Little Broughton and all three of us ended up waist-deep in the surf. But since we were already wet, it wasn’t as dramatic as it could have been.

Once we set up camp we went on our first reconnaissance mission around the island. North Rock is very small, so it didn’t take us long to cover all of it. We noted the areas where we would watch for penguins at night and went to have a quick diner before the nightfall. The rain cleared up just as we were heading out into the night.  Unfortunately, we did not find any penguins on the North Rock, but we did find a colony of beautiful White-faced Storm-petrels (Pelagodroma marina). These tiny little birds look so dainty, that it is hard to imagine that they brave the heavy storms at sea. These birds also nest on the ground and Una, who was doing a PhD on Storm-petrels at the time, was quick enough to pick up one bird from the ground so we all got a good look at it.

White-faced Storm-petrels

White-faced Storm-petrels

When we returned to camp we went straight to bed, opting to sleep without the tents, just in our sleeping bags again. This night we had a different menace. Shearwaters left us alone, but the mosquitoes were out with a vengeance. They obviously don’t get many opportunities to feed on mammals on the island and we presented them with a feast of a life time. None of us got much sleep and when we emerged from our sleeping bags in the morning our faces were covered in red bumps of mosquito bites. However, that was not our biggest problem.

Rainy clouds over the East Rock

Rainy clouds over the East Rock

The weather has changed overnight and our landing site was no longer usable, as the current was going across it instead of towards it. The sea became quite rough, the sky was covered with menacing looking rain clouds and the wind was blowing a gale. Susanna found a new spot where we could try to land the boat and when the boat arrived we transferred all our gear there. We set there waiting, but the Zodiac wasn’t coming. The swells were so big that as the boat rode the waves it constantly disappeared from view. Just as we started thinking that we would have to stay on the island until the weather improved, the Zodiac was lowered into the water and Nick was coming to get us.

The actual loading of Zodiac wasn’t that bad, but as we motored out toward the waiting boat, my mind struggled to comprehend the size of the waves.  Three meter swells look like Mount Everest when you are sitting on a low lying Zodiac. Thankfully the waves were not breaking, so Nick steered the Zodiac in an almost vertical climb as the waves approached. I must have been absolutely panicked, given that I can’t swim, but I don’t remember being scared. We were in the boat, we were committed, and there was simply no way out of the situation but to push on towards the bigger boat.

Finally we made it and Nick made another round to the rock to pick up Una and Susanne. With the last glance at the North Rock we said goodbyes to the amazing birds that call these wild islands their home and settled in for the bumpy ride towards Port Stephens. At last, we were headed towards civilization and hot showers…

Receding storm

Receding storm

 

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