Butterfly Photography at Our Local Parks - Bukit Panjang Butterfly Garden

Butterfly Photography at Our Local Parks
Featuring : Bukit Panjang Butterfly Garden


An aerial view of Bukit Panjang Butterfly Garden

Almost five months ago to the day, the community volunteers participated in a Community Planting Day at Bukit Panjang Butterfly Garden. The brainchild of grassroots activist Sussie Ketit, it had the strong support of Mayor Teo Ho Pin, the Member of Parliament for Bukit Panjang and the local community gardeners in the area. With the help of volunteers from the Seletar Country Club group under the capable leadership of Mr Foo JL, the Bukit Panjang Butterfly Garden Phase II took shape.

And this was how it all started...  Community Planting and saplings in the planters just 5 months ago

Back on 3 June, the planters were prepared with topsoil and compost and various butterfly host and nectaring plants were readied for the community to do some gardening. Mr Foo's strategy of concentrating the plants in organised planter beds surrounded by concrete kerbs was to eliminate the accidental removal of the butterfly host/nectaring plants (many of which are 'weeds') by maintenance personnel. It was clear that any plants found within the planter beds were intentionally planted there and should not be cleared as 'weeds'.

Lush greenery in the planters just 5 months later!

Fast forward five months later, under the tender loving care of the volunteers, especially Sebastian Chia, Lydia Davina Yeo, Cheng Khim, Mr Foo, Evangeline Seah and many other passionate volunteers who spent a lot of their free time tending to the plants and watering them, the Bukit Panjang Butterfly Garden has now attracted many species of urban and even some forest butterflies. The planter beds are now covered with lush greenery and the butterfly nectaring plants providing sustenance to the visiting butterflies.

All grown up, with lots of tender loving care!

It is amazing, when you consider the empty planters just five months back. Our equatorial climate is just ideal for the growth of plants and with some effort in maintaining the plants, the results can be quite satisfying. Today, the plants are doing well and the butterfly species count has reached 51 species in just a short five months!

Host and nectaring plants aplenty.  Can you spot the Mottled Emigrant on its caterpillar host plant?

The mix of plants ranged from host plants like Rattlebox Weed, Crown Flower, Seven Golden Candlesticks, Blood Flower, and many more. Nectaring plants included Lantana, Red Tree Shrub, Purple Snakeweed, Spanish Needle, Bandicoot Berry, and so on. In the early morning hours and on a bright sunny day, a visitor can see many butterflies fluttering around the plants, feeding and laying eggs on their preferred caterpillar host plants.

Crows and Tigers attracted to Eupatorium squamosum at the butterfly garden

The alkaloids in the Asteraceae species, Eupatorium squamosum that was cultivated in the planters appear to be as attractive to the Danainaes (Tigers and Crows) as the Indian Heliotrope and the Rattlebox Weed plants. Amongst the Danainae species observed at this plant's flowers are the Striped Blue Crow, Blue and Dark Glassy Tigers and a Blue Spotted Crow.

A high-flying butterfly's view of the Bukit Panjang Butterfly Garden

The success of this small butterfly garden, spanning about 150m by about 50m, is probably due to its proximity to the Central Catchment Nature Reserves. The park connector network that links up this area to the biodiversity-rich nature reserves also helps as a 'bridge' to facilitate butterflies' movements along nature-friendly 'highways'.

Although the butterfly garden is no more than 10-15 away from a major road, the use of plants as buffers help to mitigate the effects of vehicular exhaust pollution and fast-moving vehicles from the butterfly garden

Although the Bukit Panjang Butterfly Garden is located just about 10-15 m away from the busy Bukit Panjang Road, air pollution and the movement of vehicles is mitigated by rows of buffer plants that shield the butterfly garden. Immediately next to the 3+3 lane major arterial road is a green roadside planting verge that features Heliconias and other shrubs. Further in, two rows of Lakka Palms and Coconut palms, with more Heliconias buffer the butterfly garden.

Creative artwork on the concrete kerbs by young and old artists lend a splash of colours to the planters at the butterfly garden

The assortment of plants in the planters have been effective in attracting butterflies. In a further attempt to beautify the planters, the boring precast concrete kerbs are given a fresh coat of paint. Volunteers, young and old, helped to add a splash of colours, in the form of stylised butterflies and plants to the kerbs.

Butterflies bred from caterpillars found at the butterfly garden

The community volunteers are trained to breed caterpillars found on the host plants at the butterfly garden, and the eclosed butterflies are released back into the garden to sustain the population of butterflies there. The Town Council has been requested not to spray pesticides at the butterfly garden to ensure that the caterpillars and butterflies are not killed.

An assortment of butterflies found at the Bukit Panjang Butterfly Garden

The gardeners who are maintaining the area are also taught how to make compost from the dead leaves that are collected from the trees, and to practise sustainable gardening. The compost is then used for the planters to help sustain healthy plant growth. The community education and awareness efforts also help to inform visitors to the butterfly garden not to kill the caterpillars and butterflies as they are part of our natural biodiversity.

So the next time you are in the Bukit Panjang area, do drop by and take a look at the Bukit Panjang Butterfly Garden and see how many butterflies you can count fluttering amongst the shrubbery. Here you see a variety of butterflies that can be found at the butterfly garden.

How to get there :

There are many bus services that bring visitors to the bus stop along Bukit Panjang Road. Alight just in front of Blk 222 and walk eastwards towards the Bukit Timah Expressway (BKE). For those taking the MRT, alight at Choa Chu Kang MRT station (NS4), hop on to the LRT and alight at Pending Station (BP8). Drivers can access the HDB carpark via Petir Road and park your car near Blk 213 (carpark CKBJ8), where parking is free on Sundays and Public Holidays.

Text by Khew SK : Photos by Alan Ang, Janice Ang, Sebastian Chia, Foo JL, Sussie Ketit, Khew SK, Michael Khor, Or Cheng Khim, Soh Kam-Yung, Irene Tan and Alson Teo

The Butterfly Antennae

The Butterfly Antennae
A Butterfly's Antennae - Its Biological Navigation System


The curved clubbed antennae of a Common Birdwing

In telecommunications, an antenna (singular) or antennae (plural) is simply defined as an electrical device that transmits or receives electromagnetic waves through the air. The first man-made antennae was invented by German physicist Heinrich Hertz in 1888 and its development led to wireless communications across the world. In the natural world, the antennae is a pair of long, slender, segmented structures on the head of insects, centipedes, millipedes, and crustaceans. Most antennae are organs of touch, but some are sensitive to odors and other stimuli and are believed to serve the functions of smell, navigation and balance in butterflies.


A prominently clubbed antennae of a Tawny Coster

All butterflies have a pair of antennae. These appendages are connected directly to the butterfly's head and are always clubbed. The clubbed antennae are usually used in a "non-scientific" way to distinguish between butterflies and moths. In general, moths have curly, feathery, thin antennae. However, there are some moths, including some genera in the family Zygaenidae (Burnet Moths) and Castniidae (Cane Borers) that have distinctly clubbed antennae like butterflies.



The butterfly's antennae originate from the top of its head and between the eyes. These segmented antennae are known to serve different functions that aid the butterfly to smell, navigate, balance, find a mate, detect flowering plants and even tell the time of the day! The antennae is an important organ of the butterfly that, if missing or damaged, the life span of the butterfly will be severely shortened.



Smell
Butterflies don't have noses as we humans have. However, they have chemo-receptors in their antennae and legs that perform the sensory function that is equivalent of a "nose". These allow butterflies to sense flowers that are full of nectar and distinguish them from flowers that are not as productive for the butterfly to visit. The antennae's chemo-receptors that are used for assessing the environment’s physical and chemical properties also sense the pheromones of other butterflies, helping them find mates across large distances.



Balance
The butterfly's antennae are also sensitive to wind directions and changes in the velocity of the wind. This helps the butterfly ride the wind currents and maintains its way-finding ability. Near the base of the antennae, in the 2nd antennal segment, there is a special organ called Johnston's organ. This organ draws information from the antennae to help the butterfly maintain its balance and orientation during flight. This organ also helps butterflies find mates as well, recognizing the wing beats of other butterflies of the same species. Without its antennae, a butterfly may be unable to fly in a particular direction and even end up flying aimlessly in circles.



Telling the Time
Butterflies are usually active during the day, but become sedentary and stop to 'roost' when night falls. Besides using their eyes to distinguish day from night, butterflies also use their antennae as light receptors. From research done, it has been found that the antennae track the position of the sun and turn that information into a time of day. When butterflies lose their antennae, they aren't able to determine the time of the day.


A butterfly with damaged antennae will be disoriented and cannot fly properly

Navigation
In a research conducted by biologist Steven Reppert of the University of Massachusetts who published a paper in Science, discovered an interesting outcome when he clipped off the antennae of the butterflies. When the butterflies lost their antennae, they no longer flew in a uniform direction. Without their antennae, the butterflies were unable to track the position of the sun. The butterflies lost the ability to navigate using the sun to ascertain the time of the day, and could no longer adjust their direction.



An important function of butterfly antennae is their ability to help the butterflies fly in the right direction. This is especially important for migratory species, such as the Monarch (Danaus plexippus). These butterflies must know the correct direction to fly during a specific season, such as flying south for the winter. This tends to work in conjunction with the clock feature; to keep flying south, for example, the antennae must determine what time it is and where the butterflies must be positioned relative to the sun's position in the sky, performing like a built-in GPS system for the butterfly.


The Lemon Emigrant has been observed to "migrate" in numbers across Singapore in one direction in the morning and then fly in the opposite direction in the afternoon

In Singapore, there have been occasions where a local species, the Lemon Emigrant (Catopsilia pomona pomona) have been seen to fly in groups across the island in a particular direction in the morning, and then fly in numbers again, in the opposite direction in the evening.


The orange-tipped antennae of a Commander

Now we know some of the functions of the butterfly's antennae. But do all the antennae look the same amongst the different species? From observations across the different species in the different families of butterflies here in Singapore, the simple answer is no. Besides being clubbed, the antennae of different families of butterflies show minor but interesting differences.




Have you noticed that the clubbed antennae of Papilionidae butterflies curve upwards?

Amongst the species of the Papilionidae, the clubbed end of the antennae for many of the species curve upwards away from the horizontal. Besides being usually jet black in colour, the clubbed end of the antennae in these Birdwings and Swallowtail species are thick and show a distinctive curve at the tip of the antennae.




But the clubbed antennae of the Danainae butterflies curve downwards?

Compare this curve with the Danainae species. Many of the Crows and Tigers' antennae also show a curve, but the curved end of the clubbed antennae usually bends downwards instead. Is there a reason for this difference between these two groups of medium to large sized butterflies?





The antennae of many Pieridae and Nymphalidae species are straight, rigid and end with simple clubbed ends

The Pieridaes' antennae tend to be short and rather straight, ending in a clubbed end without any marked curve, unlike those found in the Papilionidae and Danainae species. The same can be said of the antennae of many of the Nymphalidae species, where the antennae are straight with a simple clubbed end without any bends in the antennae. Many of these species also have a coloured clubbed tip - usually orange or yellow.




Many Lycaenidae species have banded antennae with thick clubbed ends

The Lycaenidaes' antennae have an interested banded appearance in many of the species - usually black-and-white and ending with a coloured tip. The short stubby antennae of the Curetinae (Sunbeams) are rigid and straight, usually with an orange-coloured tip. Amongst the Miletinae, some of the species' antennae end with a slight downward curve at the clubbed end.





The Hesperiidae have hooks at the ends of their clubbed antennae known as the apiculus

The Hesperiidae (Skippers) are known for their special 'hooked' feature in their clubbed antennae. This terminal 'hook', known as the apiculus, is a feature that is present in many of the Hesperiidae species where the antennae ends in a sharp tip after the club. In many species, there is usually a different colour either before the clubbed end or at the apiculus, and these may be diagnostic features of some of the sub-families of skippers. Some species also sport banded appearance on their antennae with either black-and-white or orange-and-black colours.



So the next time you go butterfly watching and are given an opportunity to study the antennae of the butterflies at close quarters, take a closer look at their antennae and note the differences amongst the different species of butterflies.

Text and Photos by Khew SK

Other related articles on this blog :

• A Butterfly's Proboscis - Its Lifeline to Survival
• I Spy, With My Little Eye