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Subject: [Eagles] Crested Honey Buzzard 鳳頭 蜂鷹 [Print This Page]

Author: Hendrix    Time: 4/04/2009 23:01     Subject: Crested Honey Buzzard 鳳頭 蜂鷹

4/4  MP







飛羽大同 allbird.org
Author: ajohn    Time: 4/04/2009 23:19

Why isn't this a Crested Serpent Eagle?
Author: Hendrix    Time: 5/04/2009 00:01

the underside of the flight feathers  black with broad white bars of Crested Serpent Eagle is more line up .



Author: pitarhk    Time: 5/04/2009 06:19

琴日事後發現好多疑點...都係覺得似蛇鵰 Crested Serpent Eagle

原因:
1.頭同翼比例唔同(蜂鷹睇落個頭比較細)
2.眼先顏色(圖中眼先比較黃..蜂鷹應該唔會咁黃)
3.尾部,蛇鵰尾部黑白接近相等,而蜂鷹白多過黑)

總括呢隻應該係 蛇鵰 亞成鳥 Crested Serpent Eagle sub-adult
Author: ajohn    Time: 6/04/2009 11:41

To clarify my previous comments - I think the following was also suggested by Peter (sorry, I can't read the Chinese!)

I realise that an adult CSE should have a solid pale bar and dark trailing edge, not shown by this bird.
However, the bird in the photograph shows a struture similar to CSE, especially in terms of having a relatively bulky body. Extensive yellow is visible around the eye, and the eye and bill look relatively large. The underparts seem to be heavily spotted, typical of CSE. I find wing shape difficult to judge due to the angle of the photo.

Crested Honey Buzzard should seem slimmer. In particular, the head should seem much smaller and project further beyond the wings. The bill should be smaller and weaker, with no bare skin around the eye (which should be dark).

The main feature suggesting Honey buzzard seems to be the tail pattern dark bands near the base and tip, but otherwise pale) - but CSE also shows this tail pattern (and I think the broad dark bars actually fit better for CSE).

I think the bird is a 1st summer CSE, in which the flight feathers are retained from juvenile plumage but the body feathers have undergone a complete moult to adult-type plumage. I don't remember seeing a bird in this plumage before and can understand how the lack of the usual white/dark bar could cause some confusion.
Author: kmike    Time: 6/04/2009 14:01

Agree with John - Crested Serpent Eagle with juvenile flight feathers.

I have seen birds like this at Ng Tung Chai in the past.

Cheers

Mike K
Author: mbill    Time: 6/04/2009 14:15     Subject: Crested Serpent Eagle

I agree this is a crested serpent eagle--juvenil
04/04/2009
Mai Po (same time, same place, same bird)





Author: birdyoung    Time: 11/04/2009 06:24

This is a 1cy(Juvenile) Crested Serpent Eagle without molting.
You can find 2 dark band at the tail.
This bird will start molting its p1 soon.

Birdyoung




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