Asian Toad (Duttaphrynus melanostictus)
Sentosa, 8th March 2016

These photos of a dead Common Asian Toad that appears to have been run over by a passing vehicle were shared by Jan Tan.

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Photograph by Erwin Chan

Striped Keelback (Xenochrophis vittatus) eating Asian Toad (Duttaphrynus melanostictus)

Location, date and time: Singapore Island, Jalan Bahtera in compound of Sarimbun Scout Camp; 9 December 2014; around 1600 hrs.

Observation: A Striped Keelback of about 70 cm total length was found freshly dead and in the middle of swallowing an Asian Toad. The accompanying picture shows the anterior part of the dead snake with the hind limbs of the toad sticking out of its mouth.

Remarks: The Striped Keelback is an introduced species in Singapore where it inhabits rural and suburban areas. It is known to feed on frogs and small fishes (Baker & Lim, 2012: 114). The present observation confirms that it also eats toads. The cause of the snake’s death is unknown.

References:

  • Baker, N. & K. K. P. Lim, 2012. Wild Animals of Singapore. A Photographic Guide to Mammals, Reptiles, Amphibians and Freshwater Fishes. Updated edition. Draco Publishing & Distribution Pte. Ltd. and Nature Society (Singapore).

Source: Singapore Biodiversity Records 2015: 55

Pellets from Tuas: 1. The Pellets
By Melinda Chan & Chan Yoke Meng, 20th February 2015;

The casting of pellet by certain groups of birds is not too well known– see here for more information. After swallowing their prey, these birds regurgitate the indigestible parts that were compacted in the gizzard in a form of pellets. These pellets collect on the ground below the trees where the birds normally perch. Ornithologists collect and study pellets to get information of what the birds had been eating.

Of late, Melinda Chan had been collecting these pellets while Chan Yoke Meng was busy photographing the Black-shouldered Kite (Elanus caeruleus) along the tree-lined avenue in Tuas.

The image of the the exposed pellet clearly shows the bleached bone fragments.

Together with the pellets on the ground were carcasses of half-eaten rodents.

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Source: Bird Ecology Study Group

Photograph by Kelvin K. P. Lim

Land snails Sarika resplendens feeding on frog carcass

Location, date and time: Pulau Tekong, reclaimed land at the south; 7 July 2012; 2125 hrs.

Observation: Eight examples of Sarika resplendens, the largest about 1.5 cm in shell width, were observed nibbling on the carcass of a small frog, probably Field Frog (Fejervarya limnocharis).

Remarks: The cause of the frog’s death is not known, but it is not likely to have been killed by the snails, which appeared to be scavenging.

Although Sarika resplendens is known to be herbivorous and detritivorous, it has apparently not been recorded to consume animal flesh (Tan et al., 2012).

Reference:

  • Tan S. K., Chan S. Y. & G. R. Clements, 2012. A Guide to Snails and other Non-marine Molluscs of Singapore. Singapore Science Centre. 176 pp.

Source: Singapore Biodiversity Records 2015: 15

Günther’s Frog (Hylarana guentheri)
Sungei Buloh, 9th December 2014

Common Asian Toads (Duttaphrynus melanostictus)
Sungei Tengah, 14th July 2014

It’s likely that this (very unfortunate) pair of Common Asian Toads was crossing the road while in amplexus when they were run over.

Any idea what species this is? Spotted at Sengkang Riverside Park.

Source: David Tan Instagram

This is an American Bullfrog (Lithobates catesbeianus), presumably released by people.