Archive for May, 2007

I and the Bird #50

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I and the Bird #50 is hosted by A Blog Around the Clock. It is a carnival of 36 blogs from all over the world - actually, mostly from the US. They cover many aspects, from birds to trees to whatever. Why don’t you check it out for yourself…

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Buffy Fish Owl encounters

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“One of the most common owls I have encountered in Singapore is the Buffy Fish Owl (Ketupa ketupu) (left). The owl breeds on the mainland and also on the offshore island of Pulau Ubin.

“I once went to a villager’s house where the breeding seems to be prolific and I interviewed the resident about the owls.

“He said ‘The owl will come to make a nest in a hole in the tree trunk. When the baby owl gets bigger, it will come out and hang around to be fed fish by the parent. When it is exposed, it gets attacked by crows and other birds and will fall to the ground. Sometimes when it begins to learn to fly, it may also fall on the ground’.

“It is not uncommon for people to pick up a helpless baby owl and take care of it until it fledges (below). Interestingly, the villager did pick up fallen baby owls and put them on an elevated wooden platform. The parents would come in the evening and continue feeding the juvenile.

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“Some juveniles learn to fly fairly easily while others take a longer time, often falling to the ground. On the ground the young bird is exposed to predators like civet cat, domestic cat, etc.

“When a juvenile owl is approached, it makes a cup-cup-cup sound by clapping its beak. It may also clap in response to threats or when annoyed. While we call this clapping, the sound may actually be caused by the clicking of the tongue, not the bill. The parents will invariably fly down close to observe what is going on (below).

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“I once stayed with a baby owl for four hours. It eventually recognised me and will not beak clap. If someone else approached it will clap again. So owls obviously have the ability to recognise people who do not threaten them just like geese used as guard dogs by Chinese farmers.”

Allan Teo, 30th April 2007

Input and images by Allan Teo.

Laura-Laurie’s alpha+omega to parenthood

Intense observation of nesting birds is really not my forte. Apart from being intensive and a time consuming hobby, it is treading thinly into the fragile realm of avian breeding cycles. It is not recommended for novice bird watchers/photographers or twitchers ill primed for scientific field work.

It is not because I dislike the idea of looking at naked chicks. To say I am not curious would be not telling the truth. However, it will not be easy for any birder to convince me to make a ‘Beep! Beep!’ road runner‘s dash to join the queue of elated nest chasers for hunting shots; go home feeling lucky-happy; and or, competitively comparing images with each other at the expense of stressing nesting birds.

In the interest of birds’ welfare, I choose to be recalcitrant in this aspect of not observing nesting birds at close range or be absent. And, if that decision I make is one less potential human predator to parenting birds, or compromise the breeding cycle of especially rare birds, that is fine by me.

Somehow, the power of the unseen has an uncanny way of rewarding me for my choice to stay convicted to my beliefs. It provides me the joys of sighting those rarities in the wild conveniently, without me having to chase or hunt them down; and showing me things of interests or situations to write and share my thoughts and joys with readers. Some may choose to call it birding luck.

Laura and Laurie, the Yellow-vented Bulbul (Pycononotus goiavier) may not be a rarity in Malaysia. But they are soon to show their appreciation of my noble intent, by supporting my cause as their avian ambassadress, in the advocacy of good, birding practice.

In the past several years, pairs of bulbuls have turned my balcony into an avian maternity home. They came and went with their new families. I was reluctant to get myself embroiled in observation right from the beginning as that would mean also, I had to follow through until fledging. Anyway, let’s zoom in to read and see what they have been acting up.

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This time it was different. With Laurie’s moon walking stunts and sending me avian Morse Code with his tap dance repertoires, he finally got my attention (left). This hero is different and got style!

He was like telling me, “Hey Mam, we have decided on the nesting venue; we are Steven Spielberg’s nominated actor and actress and we have chosen you to roll the camera; and, we are ready!” How could one refuse such a privileged invitation when the stage is set and brought forth in front of one’s bedroom window, and the obligation of knowing your home is the chosen one? And so… this story began one day in January 2007.

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Laura and Laurie were finally seen together perched in their favourite roost- a Christmas tree tucked at the side of the driveway (top right).

It has taken Laurie months to win Laura over. The tinkling sounds of tap-dancing finally came to a halt. The pair disappeared for their pre-nuptial honeymoon and appeared after an absence of 2 long months. Laura turned up one day perched on the balcony rail with nesting material. Laurie on sentry duties spotted me observing from my bedroom. Vigilant as always, he squawked a warning call to his mate, sending her fleeing into a nearby mango fruit tree.

‘This is not good’ I said to myself and decided to get my act together and did right by draping a camouflaged curtain in the balcony. Further observation revealed the nesting site to be at a corner of the side balcony, where I had used assorted artificial foliages to decorate a hanging macramé basket (bottom above)

A recycled, old bird cage picked up from a Masalama (Goodbye) sale once used as ornamental piece for decorating miniature indoor plants, found a new purpose with the hanging macramé basket.

Laura and Laurie’s parenting skills were excellent, well synchronised and exhibited outstanding team work.

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The 3-point observation technique: ‘Look right, look front, look left’ for predators is always mustered before the nesting site is approached (above). Nest raiders like the Black-naped Oriole (Oriolus chinensis) are commonly seen and they are never far away.

The speed at which the nest was built was astonishingly quick. By evening the same day, the nest was already taking shape (below). Materials used ranged from dried straws to foliages found nearby.

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What was interesting and intelligently put to use was a polythene sheet, lined at the bottom to reinforce and waterproof the nest. Discerning housing contractors would also use a waterproof membrane to line the foundation at ground level before bricks and mortar get piled on top. I wonder who is learning from whom?

The images show a very neat, steady nest, piling tall, testifying the fine workmanship of Laura and Laurie. It is not shoddy and short changing like many houses being built these days.

It took three days to complete the nest. It looked like a nest built within a nest. Fourth day was rest day for Laura and Laurie.

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The first egg with reddish-brown spots came on the fifth day. The balcony was sectioned off and I decided it was time to head off for a retreat, leaving the house to the pair to incubate their eggs with minimal disturbance (far left). A week later upon my return, a second egg was observed. Exactly fourteen days after the first egg was laid, Laura was seen with grub in her beak (above right, arrow).

It was time for another inspection. The eggs have hatched and two featherless chicks noted. I decided to take no photographs to show readers. Instead, to visualize what new born naked chicks would look like. Besides, they were nothing chic or pretty to look at this stage, similar to new born human babies.

It was a critical time. For chicks to thrive, feeding schedules had to be maintained and predators kept away. I had to exercise discretion and I kept my distance.

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There are 39 species of bulbuls in SEA belonging to the Pycnonotidae family and they are mainly insectivorous and frugivorous. What did Laura and Laurie feed the chicks with? Let’s take a look at some images (left).

Four days into hatching, Laurie was observed bringing in the biggies! First a damsel fly and later in the week, a grasshopper!

There was a night and day of continuous rainfall and the heavens opened its’ ‘flood gates’ and deluged the whole residential area with flood waters.

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Feeding continued. While there were no life creepy-crawlies to be had on bad days, Laura was seen soaking wet and bringing in a motionless looking stale, crumb of macaroni for the hungry chicks (far right). Well, hard times call for tough measures.

Parenting is a stressful and strenuous task as seen in the plumage of Laurie and Laura. Apart from having lost some weight, they have not been preening themselves to look neat and in good form like other birds did (top left).

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A week into hatching, a quick, opportunity inspection was carried out when Laura was away for breakfast with Laurie. I soon learnt the familiar 7am- breakfast, whistle call by Laurie.

The chicks were looking spiky (top left). On the 9th day, transformation was amazing. They were looking downy (bottom left). On the 11th day, a commotion was heard in the balcony. I popped my head out of the doorway to investigate.

‘Oh, my goodness!’ I was taken by surprise.

A chick was perching stoically on the edge of the nest. The parents were frantically coaxing the chick to fly. I dashed downstairs for my camera and raced up again equally as excited as the parenting pair. Was the chick still there? Yes!

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It was still waiting for me to provide a hand-held single, blurry shot. After which, the chick took flight with the parents (top right). The nest became empty. Suddenly… all went quiet (bottom right).

I was taken by surprise that fledging came so early. What happened to the other chick? Was it predated or fledged earlier?

Four days after fledging, it rained heavily. Like every parent with pangs of concern of a child’s safety just left home, I wondered how the chicks weathered the storm.

As Mother Nature is the best provider of survival instincts, one chick was seen perched under the canopy balcony for shelter while parents weathered the storm at the roost.

The Omega chapter has got to be the most rewarding to write. Here I am able to finally confirm the well being of two lovely and healthy chicks of Laura and Laurie on the 8th day of fledgling.

Readers, I present you: Laura-Laurie Juniors (below: right male, left female).

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SUBMITTED BY DAISY O’NEILL (Avian Writer), PENANG, MALAYSIA.

(The bedroom was used as an observation point and hide. Some images were shot from the bedroom. No flash photography used in any of the images.)

Grey-headed Fish Eagle

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There are two genera of specialist fish eating eagles - Haliaeetus and Ichthyophaga. They live around aquatic habitats and feed almost exclusively on fish. But this does not mean that they do not take other prey. Sometimes they also feed on birds and small mammals.

The eight species of Haliaeetus are typically coastal and large inland water body species. Ichthyophaga, of which there are two species, both found in Asia, are associated with rivers and streams.

Grey-headed Fish Eagle (Ichthyophaga ichthyaetus) is a rare resident usually confined to the Central Catchment forest (left). The eagle has a small greyish head on a longish neck. The wings and body are dark brownish grey and the lower belly, thigh and under tail coverts are white, the last with terminal or subterminal black band.

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The eagle hunts from a vantage perch by the water. Once it spots a fish, it lunges at it, grabbing it with its talons (above). Generally these eagles catch fish near the surface of the water, normally immersing only the feet and legs. Once the fish is caught, it is brought back to the perch to be eaten (below).

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Central montage top left and right and bottom left by Lee Tiah Khee; the rest by Chan Yoke Meng.

Sparrow’s fledgling and oral flanges

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I was strolling around the Singapore Botanic Gardens’ Symphony Lake one evening (14th May 2007) and enjoying the antics of the Eurasian Tree Sparrows (Passer montanus). These birds seem to suddenly become common around this area ever since visitors began feeding, first the fish, then the birds. The sparrows congregate among certain dense plantings, one of which is the ixora (Ixora sp.) patch. That set me wondering as to whether they are now beginning to nest in trees and bushes.

As everyone knows, our sparrow, although called Eurasian Tree Sparrow, traditionally nests in the eaves of houses. A few still nest in my house but as neighbours are rebuilding and apparently adopting modern roof structures, sparrows are not nesting in these modern houses. Have any birders observe sparrows nesting in trees and bushes?

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That evening, I noticed a sparrow fledgling calling loudly from the ground by the pond, obviously begging to be fed by its parents. It behaved as most fledglings behave. With wings partially spread low down, it quivered its feathers as fledglings normally do. At the same time it fluffed its breast feathers (right).

And being a recent introduction to this world, it has yet to develop the instincts of being cautious oh humans. I was thus able to capture a few images in my memory card to examine them later on. Imagine my pleasant surprise when I noticed the presence of prominent yellow oral flanges (right, arrow). These develop on both sides of the mouth, extending from the corner and tapering towards the tip of the bill. They are temporary enlargement that function as targets for adults feeding the chick.

The oral flanges are prominent in the chicks of the Oriental White-eye (Zosterops palpebrosus) (left) (1, 2), which together with the reddish gape, make a prominent food target. We now know that the sparrow has yellow oral flanges but has anyone any idea whether its gape is also red?

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Eurasian Tree Sparrow is a very common bird and we tend to take it for granted. But obviously there are many aspects that are yet unknown. And if known, the information needs to be made available. As the saying goes, knowledge not shared is knowledge lost.

Images by YC except bottom image by Chan Yoke Meng.

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