Bird Behaviour Breakdown – Double-eyed Fig-parrots

Birds have one of the most evolved and complex behavioral systems of any animal group. This is due to the extra dynamics birds face living in the skies in comparison to terrestrial animals. Birds need to keep a high metabolism, with higher body temperatures than most terrestrial animals, to upkeep their insatiably high activity rates. Birds also need to keep their feathers in the utmost perfect conditions to ensure that their are no problems during flight. If a bird has damaged wing feathers and attempts to fly, it can cost them their lives.

However during my travels I have observed quite interesting and less obvious behaviors of birds, which often left me scratching my head with confusion until I researched it a bit. The first odd and memorable behavior  I witnessed was that from a Double-eyed Fig-parrot (Cyclopsitta ) I was taking photos of at Gordonvale just south of Cairns.
Cyclopsitta diophthalma race macleayana - Double-eyed Fig-Parrot

At first I though this fig-parrot was eating something growing on the branch of this rainforest tree. I thought it was most likely the lichen. But even from the limited knowledge I knew of Double-eyed Fig-parrots, I knew this could not be the case. Fig-parrots like other parrots, are mainly granivores, meaning they mostly eat seeds.

IMG_0698As I went through the photos it became apparent that the parrot was chewing on the wooden structures of the branch and not actually consuming anything. This is actually a behavior that most bird keepers would know well. In captivity, bird keepers are required to include a cuddle-bone shell for their bird to sharpen their beak on. Wild birds however do not have access to a cuddle-bone and prefer to sharpen their beaks on branches.

IMG_0697This behavior I observed of the Double-eyed Fig-parrots is completely normal for wild birds and not as bizarre as I initially suspected. This parrot was prepping his beak ready to crack some rainforest plant seed shells. Which rainforest plant seed does this parrot species prefer? Figs ofcourse! This is where the Double-eyed Fig-parrot gets its common name from.

There is one other explanation of this behavior, which is more exciting! Fig parrots actually chew holes in trees to make their nests. Instead of waiting for fungi and termites to erode away a tree hollow they take it upon themselves to masterfully excavate their own tree hollow. This fig parrot could have been testing the branch to find dampened weak spots to dig a tree hollow in.

Based of the fact this parrot was gnawing on on both the branch and the twig jutting out from the branch, I’d say we were observing the first behavior. It’s still exciting to decipher and ponder this rarely seen behavior in wild birds!

Double-eyed Fig-Parrot (Cyclopsitta diophthalma)

To find out the next strange behavior I encountered, follow the link at the end of this post.




Click here for the next bird behavior breakdown!

Danjera Dam Camping Area

Danjera Dam is about about an hour drive west from Nowra and lies tucked away in an isolated and scenic canyon. The drive to the camping ground is spectacular and offers a full immersion into pristine dry sclerophyll woodland, and wet sclerophyll forest as you descend into the gorge. The road can be fairly rough in some spots but are still manageable for cars without 4WD capabilities. Be sure to keep your eyes pealed for Eastern Grey Kangaroos, Euros and Brown Quails as they make their quick darts across the road! Once you cross the bridge over Yalwal Creek you have arrived at the destination.

 

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Nowra -> Dinjera Dam | Copyright Google Maps 2016

Nowra -> Dinjera Dam | Copyright Google Maps 2016

The campgrounds which are scattered around the dam are all completely free. The campgrounds offer basic facilities such as drop toilets and campsite fires so ensure you come prepared with full camping gear! The dam itself is great for a swim or a kayak. Even paddle boarders have taken to the expansive beauty of this location. Towards the drainage end of the dam there is a wonderfully scenic waterfall which flows into Yalwal Creek. There are various fire trails and bush walking tracks which are also worth exploring.

 

 

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Wildlife

Being surrounded by wilderness, Danjera dam has an abundance of wildlife. In the morning an afternoon, the camping sites are greeted with flocks of countless different bird species. From Bowerbirds to Fairy Wrens and Whistlers. Grey Shrike Thrush seem to be quite common around the woodland areas as well. Yalwal Creek has sandy banks which makes this a prime breeding area for Eastern Water Dragons. Also be sure to spotlight at night as the dam is home to beautiful frog species such as the Southern Stoney Creek Frog. The male Stony Creek Frogs turn a brilliant yellow colour during the warmer months and can be found on the more rocky sections of the creek and dam. The creek is home to Southern Stream Frogs (hint: they love to hang out on the Lomandra!). The water itself is teeming with aquatic life. There are multiple species of native fish present such as Common Jollytails, Gudgeons and Australian Smelt.

Comment below if you have experience this wonderful campground, especially if you have witnessed any wildlife which I have not mentioned!

Southern Stream Frog (Litoria nudidigita) | Copyright Chad Beranek 2016

Southern Stream Frog (Litoria nudidigita) | Copyright Chad Beranek 2016

Rufous Whistler (Pachycephala rufiventris) | Copyright Chad Beranek 2016

Rufous Whistler (Pachycephala rufiventris) | Copyright Chad Beranek 2016

Juvenile Eastern Water Dragon (Instellagama lesuerii) | Copyright Chad Beranek 2016

Juvenile Eastern Water Dragon (Intellagama lesueurii) | Copyright Chad Beranek 2016

Southern Stony Creek Frog (Litoria lesueurii) | Copyright Chad Beranek 2016

Southern Stony Creek Frog (Litoria lesueurii) | Copyright Chad Beranek 2016

 

 

 

 

 

 

 

 

Camp Map

Danjera Dam local map | Copyright Google Maps 2016

Danjera Dam local map | Copyright Google Maps 2016

 

1. Yalwal Camping Area

2. Toorooroo Campgrounds

3. Danjera Dam waterfall

4. Yalwal Creek bridge

Volunteers Needed: Conservation of locally occurring nest of Pied Oyster Catchers

The Pied Oyster Catcher (Haematopus longirostris) is currently listed as endangered in NSW and a rare visitor to Sydneys shores. This species is distributed around the entire Australian coastline, being found more commonly around the coastlines of the southern states of Tasmania and Victoria. In NSW this species is in decline with fewer than 200 breeding pairs estimated to occur with in this region.

 

Mating pair of Pied Oyster Catchers (Haematopus longirostris).

Mating pair of Pied Oyster Catchers (Haematopus longirostris) – Photo  by Toni Burnham

 

Pied Oyster Catchers will choose nesting sites mostly in coastal situations, on estuarine beaches and occasionally saltmarsh or grassy habitats. Nests are often exposed shallow scrapes in sand above the hightide mark, often amongst seaweed, shells, and small stones. The eggs of the Pied Oyster Catcher are sandy coloured and rely on camouflage to avoid detection of predators. They are particularly at risk of being trampled by people, especially children and dogs.

 

Pied Oyster Catcher eggs

Pied Oyster Catcher eggs – Photo by Toni Burnham

 

3 days ago a pair laid eggs on a local highly touristed beach and are currently trying to nest (Picture of eggs is actual nest site). We are looking for passionate people that can be present on a rotational basis to keep people away from the nest and keep an eye on it over the next 30 days, especially through the busy school holiday period. The site is located within the Sutherland Shire region.

If interested please email Toni Burnham on burnhamtoni@gmail.com

The Casuarina Corridor of Life

At this time of year the days are becoming colder and most animals are becoming less active, or migrated north. This stillness and quietness of winter becomes evident. However there are a few specific vegetation communities which can occasionally provide an abundance of life in the onset of winter, and it’s all controlled by food. One of these vegetation communities are the Casuarina swamp lands which line undisturbed river lines in eastern Australia. Most inland rivers are cloaked by the River She-oak (Casuarina cunninghamiana), usually 20 meters each side of the bank, but sometimes more or sometimes less depending on the geological architecture of the area.

 

Tree top view of a Casuarina swampland along Wollondilly River.

Tree top view of a Casuarina swampland along Wollondilly River.

 

 

These Casuarina swamp lands can become a very important niche for many different species of birds during the onset of winter. The reason for this does not lie with the Casuarinas specifically, but surprisingly a parasitic plant which lives on the Casuarinas. These plants are known as mistletoes. While mistletoes have adapted to mimic a multitude of different host tree species, the mimicracy displayed by the Needle-leaf Mistletoe (Amyema cambagei) is extraordinary. This mistletoe has evolved to mimic Casuarinas and Allocasuarinas, and does a remarkable job of disguising itself amoung the Casuarina needles. Unless you are a mistletoe expert, the only sure-fire way to discern mistletoe from Casurina is to witness the Needle-leaf Mistletoe in flower (which are incredibly beautiful and unique!). Casuarina flowers are much different from mistletoe flowers and look like small fluffly red or brown parts on the leaves (needles), while the Needle-leaf Mistletoe flowers have large bright red anthers that a readily distinguishable, and are probably that bright to attract the birds!

 

Needle-leaf Mistletoe (Amyema cambagei)

Needle-leaf Mistletoe (Amyema cambagei)

 

The Needle-leaf mistletoe usually flowers at the beginning of spring, however I must of been at the right place at the right time as thousands of Needle-leaf Mistletoe were in flower, giving the Casaurinas bright red highlights which contrast well among their dull foliage. This earlier flowering could probably be due to the large quantities of rain south eastern Australia has had in the preceding months. With waning nectar resources from other tree and plant species, it seemed all the nectar feeding birds in the area decided to take advantage. We were treated to an avain frenzy of tweets and feathers. There were many bird species I didn’t manage to get a photo of and many bird calls I couldn’t identify, but below are some notable entries.

 

Yellow-faced Honey Eater (Lichenostomus chrysops), preparing for flight.

Yellow-faced Honey Eater (Lichenostomus chrysops), preparing for flight.

A Mistletoe Bird (Dicaeum hirundinaceum), flutter around the canopy tops in the Casuarina.

A Mistletoe Bird (Dicaeum hirundinaceum), flutter around the canopy tops in the Casuarina.

Golden Whistler (Pachycephala pectoralis), eyeing off a flowering mistletoe target.

Golden Whistler (Pachycephala pectoralis), eyeing off a flowering mistletoe target.

Brown Thornbill (Acanthiza pusila)

Brown Thornbill (Acanthiza pusila)

Eastern Spinebill (Acanthorhynchus tenuirostris)

Eastern Spinebill (Acanthorhynchus tenuirostris)

A mating pair of Turquoise Parrots (Neophema pulchella) take off.

A mating pair of Turquoise Parrots (Neophema pulchella) take off.

 

The last bird shown above is the Turquoise Parrot which is threatened in NSW. This was an especially great find! They even landed for me to take a photo, however they chose the ugliest invasive weed species to land on, I was in any case excited.

 

Turquoise Parrot (Neophema pulchella)

 

While the bird life was astonishing, there were other appearances which you usually only get to see in areas which are healthy and remote from urban development. The area harboring this biodiversity is situated between Nattai NP and Yerranderie Conservation Area along Wollondilly River, which gives wildlife to solitude it needs to become especially diverse and abundant. The healthy sections of this river is known to be home to the Platypus (Ornithorhynchus anatinus), which I was especially lucky and excited to witness. The photo isn’t great but I was able to view it with binoculars as it would emerge and submerged for ten meters. On the banks of the river I was also able to see a healthy Common Wombat (Vombatus ursinus) grazing, and well as huge amounts of butterflies fluttering around, which turned out to be the Monarch Butterfly (Danaus plexippus) and Lesser Wanderers (Danuas chrysippus). I am unsure if these butterflies were here for the mistletoe nectar or for some kind of migration.

 

Platypus frolicking in Wollondilly River.

Platypus frolicking in Wollondilly River.

A healthy looking wombat, seemingly untouched by the current wombat disease epidemic, mange.

A healthy looking wombat, seemingly untouched by the current wombat disease epidemic, mange.

Monarch Butterfly (Danaus plexippus). This butterfly is a male, which is distinguishable by the pair of black dots on the lower wings.

Monarch Butterfly (Danaus plexippus). This butterfly is a male, which is distinguishable by the pair of black dots on the lower wings.

 

 

To witness this spectacle of nature was an inspiring reminder that there are still untouched oases of life which escape the reach of man with the addition of wonder with how many features of animal ecology remains unknown.

 

 

Birds of Broughton Island

For those of you who aren’t familiar with Broughton Island, it is a relatively small island (a touch over 100 hectares) a part of Myall Lakes National Park, off the east coast of Australia. This small island has retained some interesting natural heritage, with having the second largest population of Green and Golden Bell Frogs in the world and also one of the few places to find the critically endangered Storm Petrel. Broughton Island also boasts nesting populations of Wedged-Tailed Shearwaters (also known as ‘Mutton Birds’), and also Fairy Penguins which are occurring on the island close to the northern limit their distribution. Broughton Island provides good coastal habitat and heathland habitat which is used by a considerably large variety of different bird species. The island attracts both sea birds, raptors and even land birds which have retained their permanent positions. This makes it a popular spot for bird enthusiasts where they run annual Broughton Island ‘twitching’ events to count how many bird species are present and see if they can spot any new ones. While I stayed at Broughton conducting bell frog surveys I went to do some twitching in my spare time and this is what I found:

 

1. The first bird to great me on the island is an easy guess considering this is a coastal island: the Silver Gull (Chroicocephalus novaehollandiae) which most people just refer to as the ‘Sea Gull’. They were in a large noisy colony where the fishers huts reside.

Silver Gull (Chroicocephalus novaehollandiae)

Silver Gull (Chroicocephalus novaehollandiae)

 

2. The second bird I quickly realised were in abundance on this island were the Welcome Swallows (Hirundo neoxena). There were dive bombing insects and speeding around the main cabins, occasionally taking a pit stop on a twig or branch.

Welcome Swallow (Hirundo neoxena)

 

3. The next bird I became aware of was the Australasian Pipit (Anthus novaeseelandiae), which were cheekily and quietly jumping and rummaging around the grass and seaweed, presumably looking for invertebrate snacks.

Australasian Pipit (Anthus novaeseelandiae)

Australasian Pipit (Anthus novaeseelandiae)

4. After a heading out to one of the bell frog sites, many small birds were sighted in the Broughton Island heathland. One of them I failed to get a photo of which was the Silver Eyes (Zosterops lateralis) but the other common heathland bird was the Tawny Grassbird (Megalurus timoriensis), which occasionally perched in the open to let out alarm calls as we approached their territory.

Tawny Grassbird (Megalurus timoriensis)

A Male Tawny Grassbird (Megalurus timoriensis)

5. Before leaving the heathlands we keep sighted small ground dwelling birds scuttling in the bushes before we got close. My 300 mm lens proved them to be Brown Quails (Coturnix ypsilophora).

A family group of Brown Quail (Coturnix ypsilophora)

A family group of Brown Quail (Coturnix ypsilophora)

6. When arriving to the beach, the next bird sighted was darting in and out of the seaweed clumps with fast legs. They turned out to be Red Capped Plovers (Charadrius ruficapillus), which are are common occurrence on the coasts of Australia.

Red Capped Plover (Charadrius ruficapillus)

Red Capped Plover (Charadrius ruficapillus)

 

7. Another bird sighted darting amongst the seaweed (albeit somewhat slower and plumper than the Red Capped Plovers) was the  Ruddy Turnstone (Arenaria interpres), who took flight if approached to closely and directly.

Ruddy Turnstone (Arenaria interpres)

Ruddy Turnstone (Arenaria interpres)

 

8. After patrolling making it to the rocky coastal areas of Broughton I stumbled upon a bird which frightened me probably as equally as I frightened it. This dark bird make a shreeking call and darted to a rock almost submerged by the surf. This bird turned out to be a Sooty Oyster Catcher (Haematopus fuliginosus), which were occasionally seen in pairs most likely nesting in the rocky areas of the coast of Broughton Island. https://www.flickr.com/photos/126862220@N06/15905334509/   9. I heard small tweets and chirps within a stand of Knobby Club Rush, and manged to shoot off a few photos. The specific chirps and tweets we heard along with the photo confirmed it as a Golden-Headed Cisticola (Cisticola exilis).

Golden-Headed Cisticola (Cisticola exilis)

Golden-Headed Cisticola (Cisticola exilis)

 

The next few species of birds we witnessed were soaring high above where I managed to capture some of them with the long lens. 10. This comorant flying over head is most likely to be the Great Comorant (Phalacrocorax carbo). Many were seen later on drying their wings on small rock platforms further out in the surf.

10.Great Comorant (Phalacrocorax carbo)

The Great Comorant (Phalacrocorax carbo)

 

11. The next bird saw flying overhead was the Swamp Harrier (Circus approximans) which was the most common raptor we saw during this trip. One of them were even sighted harassing the gull colony which sent all the adults in the air with attempts to try and drive off the raptor. It looked like the harrier had run off with on of the gull chicks!

Swamp Harrier (Circus approximans)

Swamp Harrier (Circus approximans)

 

12. Another impressive raptor was sighted gliding overhead which turned out to be a juvenile White Bellied Sea Eagle (Haliaeetus leucogaster), which was identified using the specific colour arrangements of the feathers as seen from below.

Juvenile White-Bellied Sea Eagle (Haliaeetus leucogaster)

 

 

There were other birds sighted which I didn’t manage to get decent photos of which include  two other raptors: an Osprey (Pandion haliaeetus), and a Whistling Kite (Haliastur sphenurus), plus some extra additions sighted in the heathland including White-Cheeked Honey Eaters (Phylidonyris nigra). In total (including the birds that I didn’t manage to get photos of), I saw 17 birds which isn’t bad for 3 days of twitching. If I kept that ratio of birds to days up I could get all species of birds in Australia within the year!