Tag Archives: juvenile Crested Serpent Eagle

The last jigsaw to the Mystery of the Crested Serpent Eagle.

By Alan OwYong and Tan Gim Cheong.

After publication of the previous article on the Crested Serpent Eagles at Goldhill, we received many reports from bird watchers and photographers of notable and important sightings of these eagles. We thank you for these records.

We now know that the serpent eagles may have paired up almost two years back in March 2019, thanks to Art Toh’s photo of two adults perched on the same tree.

We may have our final jigsaw piece yesterday (8 June 2021). These are the dramatic photos from Koh Lian Heng showing the adult handing to the juvenile a skink it had captured earlier this afternoon. This is also the first time that both the adult and juvenile were seen together.

The adult capturing the skink at the open field.

According to Lian Heng, the adult flew to a nearby Albizia tree after capturing the skink with both of them calling out. The juvenile could not locate where the adult was despite all the calling. The adult then flew higher up to another branch.

The juvenile flying to meet up with the adult after calling out to each other.

Seeing the adult fly, the juvenile flew in to join the adult. It was then that the adult passed over the skink to the juvenile, and then flew off leaving the juvenile to eat the skink alone.

The adult passing over the skink to the juvenile.

The juvenile with the skink in its talons and was about to tear it with its beak.

Last month on May 28th , MeiLin Khoo related that the adult caught a small monitor lizard and did not eat it. Instead it flew deeper inside the forest with the lizard in the direction where the juvenile was last seen. While both eagles were out of sight, they we calling to each other the whole time.

Many thanks to Koh Lian Heng and MeiLin Khoo for this last pieces of evidence to determine the status of this family of Serpent Eagles.

Photos by Koh Lian Heng.

Singapore Raptor Report, Early Autumn Migration, July-September 2018

OHB, 220718, TEG

An immature Oriental Honey Buzzard, showing a mixture of juvenile and adult tail as well as wing feathers, at Tampines Eco Green, 22 July 2018, by Pary Sivaraman

Summary:

The early migrants included all the five expected species, namely the Western Osprey, Oriental Honey Buzzard, Japanese Sparrowhawk, Chinese Sparrowhawk and Peregrine Falcon, during the July to September period.

A total of 27 Oriental Honey Buzzards were recorded. At least nine were immature orientalis, which would be individuals hatched last year, spending the summer here this year and migrating to the north only next spring. One torquatus tweeddale morph was photographed at Mandai Road on 10 July, and another at Pasir Ris Park on 24 & 25 August, both being adult males.

Twenty nine Japanese Sparrowhawks were recorded, a much higher number compared with the same period last year when only five were recorded. The first  arrival was on 1 September at Kranji Marsh; seven around the central forests from mid-to-end September; one at Pulau Ubin and 20 at the southern ridges, notably 8 on 27 September and 11 on 29 September at Henderson Waves.

The three Chinese Sparrowhawks recorded were all juveniles. The first arrival was a single bird on 24 September at Henderson Waves, followed by another on 29 September and the last one at Pulau Ubin on 30 September.

One Western Osprey was recorded at Yishun Dam on 18 August and another at Sungei Buloh Wetland Reserve (SBWR) on 24 Sep. At Lower Pierce after sunset on 24 September, a sparrowhawk, not identified to species, was going after bats.

Five Peregrine Falcons were recorded, however only the individual on 24 September at  SBWR is likely to be a migrant, with the rest being of the resident ernesti subspecies. The individuals recorded at Hindhede park on 28 July, and Pulau Ubin near the jetty on 19 & 22 August, both perched on telecom towers, were noted as ernesti. The other two recorded on 21 July at Gardens by the Bay, and 25 July at Changi Coastal Road were probably ernesti as well.

CGH catch rat, 280918, PRP mangrove, Alvin Seng

Adult Crested Goshawk showing the crest, the thick dark tailbands, and finely barred ‘thighs’, with a rat, at Pasir Ris Park, 28 Sep 2018, by Alvin Seng

For the resident raptors, seven species were recorded, and only the notable records are highlighted. A young White-bellied Sea Eagle was observed sitting on a nest at Loyang on 9 July. A Brahminy Kite was mobbed by crows at Lorong Halus on 28 August. For the Crested Goshawk, two juveniles recorded during this period are good signs of breeding, one at Windsor Nature Park on 7 July and another at Bidadari on 28 September.

Two Crested Serpent Eagles were recorded. One individual photographed by Benny Ng at Yusof Ishak Secondary School on 18 August was notably a juvenile, which is rarely seen in Singapore. The other was an adult photographed flying over the Learning Forest at the Botanic Gardens on 25 September.

CSE, 180818, Yusof Ishak Sec, Benny Ng, FB NSS

A juvenile Crested Serpent Eagle, at Yusof Ishak Secondary School (Bukit Batok Street 25), on 18 August 2018, by Benny Ng

For a pdf version with more details, please click Singapore Raptor Report, Early Autumn Migration, Jul-Sep 2018

Many thanks to everyone for their records and to Pary Sivaraman, Alvin Seng and Benny Ng for the use of their photos.