Feeding birds in Punggol Park

Ever since I bought my tele-zoom lens, I have been attempting to document photographic records of bird feeding records of plants. This was partially motivated by the BESG blog, as well as my previous job which emphasises on the importance of plants’ ecosystem services. For one, having a better knowledge of what plants certain guild of birds prefer helps a practitioner to decide on the species and diversity of plants to cultivate in order to attract a rich bird diversity.

This post is a continuation from my previous one introducing Punggol Park but with emphasis on bird feeding.

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The Tea Tree (Melaleuca cajuputi), attracts a good abundance of nectar feeders, which includes bees, butterflies, the Olive-backed Sunbird (Nectarinia jugularis; top left) and the Brown-throated Sunbird (Anthreptes malacensis; top right). I also managed to spot an Oriental White-eye (Zosterops palpebrosus; bottom) poking into the flower buds, presumably attempting to extract some nectar too.

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The Coral Tree (Erythrina species; left) and the Clitoria Tree (Clitoria fairchildiana, right) are two small trees that flower perpetually, therefore providing a good nectar source for the Olive-backed Sunbirds.

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The most common mistletoe in Singapore, the Malayan Mistletoe (Dendrophthoe pentandra) is frequently visited by the Brown-throated Sunbird when it flowers.

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The Salam Tree (Syzygium polyanthum), flowers and fruits profusely several times a year. Its cherry red fruits attract frugivores like the Yellow-vented Bulbul (Pycnonotus goiavier; top), Asian Koel (Eudynamys scolopacea; bottom), and Pink-necked Green Pigeon in the park.

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The Yellow-vented Bulbul also feed on many other plant materials here; like the fruits of the Sea Gutta (Planchonella obovata), and even the leaves of the Rain Tree (Albizia saman)!

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The Pied Triller (Lalage nigra; top) and Common Iora (Aegithina tiphia; bottom) are two birds which often hang around the canopy of trees, hence they are more challenging for me to capture sharp photographs. However, I did observe quite clearly through the lens of my binoculars (supported by blurry images) that they will hop from twig to twig in search of caterpillars. The two pictures were taken from the Golden Shower Tree (Cassia fistula), thus indicating that the caterpillars could be the larvae of the Lemon Emigrant butterfly which feed on its leaves and are very common in the park.

Flowerpecker eating Myrmecodia fruits

I was in Sarawak for the past week, and spent a few days in Kuching. One of the most interesting flora there was probably the epiphytic ant plant, Myrmecodia species, which can be found in reasonable abundance in the city. The species is likely to be M. tuberosa, which is also found in heath forest of the nearby Bako National Park. In Singapore, the species is already presumed extinct.

The ant plant have a swollen spiny base with many tunnels within that provided a protective nesting site for ants. In return, the waste left by the ants gave nourishment to the plant.

Scarlet-backed Sunbird with Myrmecodia fruit

I was taking photos of the plant growing on a Yellow Flame (Peltophorum pterocarpum) beside the road when I saw a tiny bird flying to and pecking on the plant. Initially, I thought that it was picking up the ants residing in the plant. But on closer inspection of my photographs back in the hotel, it was holding the plant’s yellow-orange fruit with a red dot at its tip. The red head gave the bird’s identity away as a Scarlet-backed Flowerpecker (Dicaeum cruentatum).

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You can vaguely spot tiny dots of white on the stem of the prior photograph. Those are the flowers, which can be seen here from another ant plant which have fallen.

Punggol Park: an Oasis for Urban Nature

I recalled lamenting in my previous post on how my neighbourhood park, Punggol Park, is lacking in nature compared to the semi-natural Ang Mo Kio Town Garden West. Oh, how ignorant I am!

Even though I jog in the park at least once every week, I am pretty much unaware of the life that lurks behind the scene of this green space which seems to be meant solely for humans – till now.

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This park was created more than 20 years ago. I recalled when I was just a little boy, the land just north of this area was all mangroves and I had caught some tadpoles from there to rear. Now, they were all filled up and formed the Sengkang and Punggol new towns.

The highlight of this park is a large pond where people do fishing and also sometimes play with their remote control miniature ships.

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But what lies beyond the pond? Birds for one, is a major attraction for me ever since I bought my new telephoto lens. Throughout many of my nature-focused walks in the park, I got to know many of these park residents.

This Pied Thriller (Lalage nigra) on a Golden Shower tree (Cassia fistula) is one of those that I see often. However, they often forage high up the tree branches searching for caterpillars so it is considered lucky for me to get this decent picture above.

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The Yellow-vented Bulbul (Pycnonotus goiavier) and the Common Iora (Aegithina tiphia) are two are beautiful residents in the park. Just like the Pied Thriller, I have seen the Iora feeding on caterpillars, especially the Grass Yellow caterpillars that were plentiful on their host plant, the Golden Shower.

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Despite my strong appreciation for nature, there are some wildlife which I can’t stand. The Weaver Ants (Oecophylla smaragdina) definitely ranked the top. They built spherical nests using live leaves. If you are not careful while walking on the grass patch, one of them might just climb up your leg or even ‘heliborne’ onto your head from a tree above, delivering a painful bite with their large jaws. Just to enhance the effect, they sometimes inject some acid from their abdomen onto the wound.

Talk about adding salt to the wound eh?

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The bank of the pond is tastefully planted with Cat’s Tails (Typha angustifolia). Often lurking within the tall aquatic plants is the Yellow Bittern (Ixobrychus sinensis). With stripped lines running down its neck and body, they camouflage well within the foliage just like zebras among tall grasses.

They are also excellent gymnasts, apparently being able to do leg splits very well (see the left photo). In fact, they are able to walk from each leaf to the next like that. Ouch…

 

 

 

 

 

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There were many plants that were cultivated specifically to attract nectar birds like this male Olive-backed Sunbird (Nectarinia jugularis). This is the tiniest and most common sunbird in the park, with a distinct curved beak that allows it to reach into the Coral tree (Erythrina species) above.

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Have you ever romanced under a mistletoe? I think most of the couples who visited this park have, since it is a common sight to witness smooching activities when I jog at night since young till now. :x

Mistletoes (Dendrophthoe pentandra) are abundant in Singapore and certainly no less so in Punggol Park. Their flowers provide good flow of nectar for birds while their leaves feeds the pretty Painted Jezebel caterpillar (Delias hyparete metarete).

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The Tea Tree (Melaleuca cajuputi) gives a flush of white with their erected bottle-brush flowers when they bloom. This species is nationally-extinct in Singapore, but can be found in coastal and swampy areas around Southeast Asia and Australia. Catch this, the oil in the leaves is the key ingredient of the Tiger Balm!

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Brushy flowers are insect-pollinated, and butterflies are included in this category too. On the left is the Painted Jezebel butterfly which I mentioned earlier on mistletoes.

The Leopard (Phalanta phalantha phalantha) butterfly is a guarantee sight among the numerous saplings of the Flacourtia inermis plants. They often hover already it, presumably searching for a nice spot to lay their eggs on it since its caterpillars feed specifically on this plant species.

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The Kapok Tree (Ceiba pentandra) is unmistakable when its rhpe pods split. When it does so, smooth silky cotton is released to disperse the seeds entangled within. Some people call it the False Cotton Tree too since cotton wool itself is made from a distantly related plant species, Gossypium hirsutum.

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Since there is water, there is a high chance to see the kingfishers. The Collared Kingfisher (Todiramphus chloris) on the left is a very ticklish species which gives off a loud and unmistakable laughing call. On the other hand, the White-throated Kingfisher, despite having a bigger mouth, have a more pleasant voice.

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This is the flower of the Handkerchief Tree (Maniltoa browneoides), so named because of its drooping young leaves. I find its flowers more intricate though. From the looks of it, it is probably a nice insect attracting plant.

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Besides birds and insects, mammals are very prominent here too. I know of a few felines that live in the park but this particular tree-climber was new to me. In fact, this is the first time I saw one on a tree!

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One of the most domesticated birds here is the Zebra Dove (Geopelia striata). This is due to active feeding from park goers. While it is therapeutic to see the wildlife enjoying the meal one offers, I wouldn’t encourage it since pigeons are known to spread certain diseases. You wouldn’t want their population to bloom and after that, getting culled by the authorities would you?

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This was the only chance encounter with the majestic White-bellied Sea Eagle (Haliaeetus leucogaster). In fact, I ran from one end of the park to another in order to get a clear shot of this where it glided low above the pond, probably eyeing at its next potential meal in the waters. Unfortunately, it left after awhile without displaying its dive-bomb fishing ability.

Singapore has many green spaces that I feel are under-appreciated in terms of their value in nature. In this increasingly urbanised city, with diminishing natural greenery, our younger generations might not have the chance to access throughly wild nature in the future. However, we can still inculcate conservation values just at our nearest park.

So why not start observing nature at your doorstep?


Related post:

1) Feeding Birds of Punggol Park

Blank map of Singapore for download

I remember that it was quite a pain to draw a map free hand when I was trying to illustrate my study sites for my Honours thesis. Now that I have learnt a thing or two about using Geographic Information Systems, map making is much easier and recyclable if you have a base map in hand.

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This is just one of my efforts to create base maps so that the effort to create future maps with data will be significantly reduced. The map was drawn using Google Earth. While I cannot guarantee that this is what Singapore’s land coverage looks like at this point of time, this is probably the most updated based on Google Earth’s satellite images.

I have uploaded a high-resolution version in JPEG so that anyone can use it for illustrations. Please use the download tab at the horizontal navigational bar to access.

The Bidadari Squirrel

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The variable squirrel, Callosciurus finlaysonii, has long established itself in the Aljunied areas since early 1990; according to the book “Wild Animals of Singapore”.

Native to Thailand and its surrounding countries, this beautiful squirrel is unfortunately not native to Singapore. To me and my friends, it doesn’t really matter since one is almost certainly to squeal in delight exclaiming “so cute!” seeing the squirrel and its acrobatic antics.

It is almost a guarantee that you can find the squirrel in Bidadari Cemetery in the mornings. We were particularly lucky as quite a number of large figs in the place were figging, and we get to see one of them foraging about a Ficus microcarpa.

A side effect of squirrel-watching is the same as birding though. Intense neck craning from looking up the tree for too long.

 

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A religious one also went about its prayers before commencing with its breakfast at another fig tree.

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It must really suck to have Acrophobia, or a fear heights for a squirrel. Look at how intensely it grabbed the tree branch below. It was almost as if it was scared to fall down. Haha~

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No problems hopping on the ground though, as this one below escaped from our overwhelming curiosity and enthusiasm.

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For those who are unaware, Bidadari Cemetery, just like the Bukit Brown Cemetery, will be eventually cleared for residential use. While a large portion of the area are open spaces (most graves are exhumed), it still host a number of big mature trees like the Tembusu (Fagraea fragrans), Bodhi Tree (Ficus religiosia), Malayan Banyan (Ficus microcarpa), Benjamin Fig (Ficus Benjamina). All these fruit/fig bearing trees provide plenty of resources for birds and this charismatic squirrel. The open spaces and good shade from the trees also make a nice spot for a picnic or kite-flying.

Therefore, take a look before it is gone!

Google Maps changed BTNR to CCNR

I am pleasantly surprised that after reporting to Google Maps about the erroneous labelling of the Central Catchment Nature Reserve as Bukit Timah Nature Reserve (see my previous post), they have acted fast and verify and correct the label slightly after one week!

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It is comforting to know that we have a responsive team in Google Maps that value our feedbacj seriously. Looking forward to more things to come from this great company!

Fledgling Pacific Swallows

It is tough being a baby swallow. One have to share the tiny space that is seemingly half the size of a typical nest since it was pasted to a wall. It must suck to be born as a claustrophobic swallow.

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Even emptying the bowels is a tricky affair. I saw the middle baby shown above pushing its siblings gently so that it can turn around and drop the poop down to the ground. It then squeezed to make room so that it can turned itself around again.

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I have been observing this nest in the National University of Singapore since 2007 in my previous blog post. Every year I will see little chicks sitting here till now. I wonder if they do nest maintenance once in a while?

How to report a Google Map error?

From my previous blog entry, I indicated that Google Maps gave an inaccurate description of our Central Catchment Nature Reserve. What exactly is it?

If you see the embedded map below, the Central Catchment Nature Reserve is labelled as the Bukit Timah Nature Reserve. An outright blatant error.

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I decided to report this error. This can be done through the following:

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Left click on the marker, and click “More” > “Report a problem”.

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Then, you will be led to this page, whereby more details about the problem can be elaborated before submitting the report to Google.

You may sign in Google at this stage (so that they have your email) and check the box to request them to update you when the fix is done. For now, lets see how fast they will take to verify and correct the error.

Google have since fixed the issue after slightly more than a veek. See my latest post.

Back to the blue at Changi Beach

After close to 2 years, I am finally back to the intertidal zone!

The purpose for returning back to the blue was to continue with the sea cucumber research which I set aside 2 years ago. This project was highlighted during the recent Festival of Biodiversity organised by the National Parks Board.

The first stop was at Changi Beach Park, which has always been my favourite Singapore’s mainland intertidal spot because of the diversity of faunal life. I was with Ron and two of my colleagues.

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The first creature we saw was the horned-eye ghost crab, Ocypode ceratophthalmus. This is a scavenger which is also known to be able to run very fast!

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A live bivalve was attempting to burrow itself in the sane with much effort. It is interesting to observe its siphon which allows water to enter and exit its body for breathing and filter-feeding.

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There were a lot prickly white sea urchin, Salmacis sp, scattered all over the beach. They camouflaged themselves by trapping pieces of shells, algae, and sea grasses cover their top.

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This ribbon worm was extremely long, being close more a metre! It seems as that this relatively common worm still do not have a scientific name yet. Hopefully the Mega Marine Survey will eventually help to solve this mystery.

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A nice find was this knobbly sea star, Protoreaster nodosus. This is still a little juvenile, and can grow up to more than twice its size eventually.

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There were quite a number of these sea slugs, or more specifically, the geographic sea hare, Syphonota geographica. They are thought to grazed on sea weeds.

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I also found two octopi, one hiding in the a dead fan shell and another in a huge bailer snail shell.

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Moving on to the sea cucumbers, I was quite surprised to find so many Holothuria notabilis. They lie buried horizontally just beneath the sandy surface with their butt sticking out for breathing. Yes, they breathe through their butt!

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Another burrowing sea cucumber is this. In her comprehensive marine wild fact sheets, Ria named it as the smooth sea cucumber. Based on some of its external characters, including their simple stubby tentacles, they can be safely placed in the genus of Paracaudina sp. Microscopic examination will be needed to further zoom in on its identity.

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Another which deserves some study is this purplish sea cucumber which is frequently found under the rocks. I was unable to tell what it was at first glance; hopefully it will not elude me for long.

Meanwhile, at the other end of Changi Beach, Ria has found another fascinating sea cucumber which she highlighted in her blog. This is really interesting because it is very likely to be from a new family of cucumbers that is never recorded in Singapore!

Where is the Central Catchment Nature Reserve?

All of us know where the Central Catchment Nature Reserve (CCNR) is. Or do we?

I was unable to find an accurate map showing the boundaries of the CCNR from the National Parks Board (link), Singapore Land Authority (Onemap.sg), and even Google Maps.

In the end, after some research, the Urban Redevelopment Authority of Singapore (Master Plan 2008) and the Ministry of Defence (Singapore Topographic Map) seem to be the only two which got it right. Not surprising, considering the need for accuracy for land-use planning and navigation for the military respectively.
 

Download the map of Central Catchment Nature Reserve
 
Unable to obtain a decent map, I decided to created one on my own. You may download the high-resolution map free at my Download page. Please email me if you find any discrepancies. I will be more than happy to correct it!
 
CCNR

Some explanations of the legend are described below.


Nature Reserve: Other than Bukit Timah Nature Reserve, the rest of this category belong to CCNR. Note that CCNR also includes the reservoirs which it surrounds
Non-Reserve Forest: Most of these areas are forest. Individual buildings within are excluded
Park: MacRitchite Reservoir Park
Residential: Mainly residential. Includes eateries and other commercial entities
Singapore Zoological Gardens: Includes Night Safari, and the upcoming River Safari
Utility: If you zoom into Google Earth at this patch, you can see satellite dishes with Singtel’s logo

Having consistent and accurate information is important, especially when it involves the conservation of our fragile biodiversity. Already, the CCNR is already threatened by many developments and structures within and surrounding it; and it will continue to be faced with them in the future.

But, that will be a separate post for another day. Stay tuned!
 
The map was created using ArcGIS with the following resources:
  • Google Earth Satellite Images
  • Master Plan 2008
  • Road layer was adapted from Cloudmade.com, which is in turned sourced from www.openstreetmap.org.

Singapore’s Sea Cucumbers: A Dichotomous Key

The last weekend has been especially exciting because of the inaugural Festival of Biodiversity organised by the National Parks Board.

For this festival, the South-east Asian Biodiversity Society set up a booth together with Lewin Education in the Singapore Botanic Gardens. There was a continuous flow of kids who love designing the free photo frames being distributed. We also took the opportunity to educate on-lookers about what we actually do. Being a young society, every single person we reach out to is important.

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I was tasked to design a poster on a mini-project which I have been planning to do for awhile; identifying our local nameless sea cucumbers. The purpose of this poster is to basically let people know how I derive the identity of each sea cucumber, right down to their family level by using a simple Yes/No dichotomous key.

Sea Cucumber 2012

The key was generated based on my current knowledge of the families and species of sea cucumbers in Singapore. Note that the pictures of spicules are not unique to all species within the family as there are some that do not possess the spicule designs. I will not be surprised if one or two more families are added next time; upon which I might update the poster again.

But for now, everyone is free to download this poster free at the Downloads page at the horizontal navigation bar. For anyone who requires a higher resolution file for printing at A2/A1 size, please email me separately to request.

Many thanks to Ria, Lewin Education, and Carmen for contributing their valuable photographs, sponsoring the printing for the exhibition, as well as helping to design the poster respectively.

New theme for Urban Forest

This must be the 4th time that I changed my blogger template. I can’t remember how long the former one had stayed till I removed it an hour ago (below). It must have been several years! While I am excited to have a nice new layout, I am also starting to miss my former one already .

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I have stayed in Blogspot faithfully despite the emergence of the newer and more popular Wordpress because of the limitations of the latter. While it is aesthetically superior with more templates, one will have to foot a sum to customise the html. Advertisements also appear after my posts when I am viewing the Total Vascular Flora Blog – another blog which I am contributing to – on my IPad.

In comparison, Blogspot has always allowed users who are more tech-savvy to play with its html. Unfortunately, with my fragmented knowledge, my former layout was probably the most that I could have managed.

With the new Blogspot design, it allows more customisation of the theme by using WYSIWYG. That being said, it cannot tweak every single item in the theme, and that is where some little bit of html editing will make a big difference. And with that, I have been working hard last night to get my new layout ready for today.

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I set the width of the posting much longer to allow larger photos to be uploaded. Hopefully this will appeal to people more since ‘’a picture says a thousand words'”! If you think the picture above of the Yellow Flame flowers looks familiar; it is, because that is used for my new blog banner. :)

So, please look forward to more nature postings as I strive to deliver them in higher quality. Also anticipate better resources from here as I will expand my navigation bar pages to include more things.

Thanks for the support!