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        Discussion Area 討論區 >> Photo Gallery 相片分享 II >>  Upland Buzzard 大鵟 (Qinghai 青海)
        
(Message started by: HF_Cheung on Jun 20^th, 2004, 5:37pm)

Title: Upland Buzzard 大鵟 (Qinghai 青海)
Post by HF_Cheung on Jun 20^th, 2004, 5:37pm

Upland Buzzard 大鵟 Buteo hemilasius dark phase adult 深色型成鳥
Qinghai 青海
03/6/2004
Swarovski Telescope + Nikon 900.
http://www.geocities.com/hf_cheung_ap/UplandBuzzard1.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/hfcheung006.jpg

Upland Buzzard 大鵟 Buteo hemilasius dark phase immature 深色型未成年鳥
Qinghai 青海
02/6/2004
Swarovski Telescope + Nikon 900.
http://www.geocities.com/hf_cheung_ap/UplandBuzzard2.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/hfcheung007.jpg
HF Cheung

Upland Buzzard 大鵟 Buteo hemilasius immediate phase 中間型 (?)
Qinghai 青海
02/6/2004
Swarovski Telescope + Nikon 900.
http://www.geocities.com/hf_cheung_ap/UplandBuzzard3.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/hfcheung008.jpg

Upland Buzzard 大鵟 Buteo hemilasius pale phase adult 淡色型成鳥
Qinghai 青海
03/6/2004
Swarovski Telescope + Nikon 900.
http://www.geocities.com/hf_cheung_ap/UplandBuzzard4.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/hfcheung009.jpg
http://www.geocities.com/hf_cheung_ap/UplandBuzzard5.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/hfcheung010.jpg

02/6/2004
http://www.geocities.com/hf_cheung_ap/UplandBuzzard6.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/hfcheung011.jpg

Upland Buzzard 大鵟 Buteo hemilasius pale phase adult 淡色型未成年鳥
Qinghai 青海
03/6/2004
Swarovski Telescope + Nikon 900.
http://www.geocities.com/hf_cheung_ap/UplandBuzzard7.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/hfcheung012.jpg

Title: Re: Upland Buzzard 大鵟 in Qinghai 青海
Post by Koel_Ko on Jun 21^st, 2004, 5:56pm

Dear Fai Gor,

These wonderful photos mystify me a bit...
I have a few questions for you please:

1. Immature Buzzards have pale iris - But is that a reliable feature for Upland Buzzard as well?
2. Can plumage characters be used to distinguish Upland from Common?
3. How do we tell Upland apart from Common in flight?
4. Are there any behavioural difference between the two species that can be readily observed and used to distinguish the two?
Thank you in advance for the explanations!

Title: Re: Upland Buzzard 大鵟 in Qinghai 青海
Post by Mike Turnbull on Jun 22^nd, 2004, 11:06am

This is a very interesting series of shots, and Koel's questions will certainly set me doing a bit of investigative work.

However, surely the first bird is an aquila eagle of some description - Steppe Eagle?.

Mike

Title: Re: Upland Buzzard 大鵟 in Qinghai 青海
Post by HF_Cheung on Jun 24^th, 2004, 2:29pm

Dear Koel,

The most significant difference is that Upland Buzzard has white tail, and often have pale rufous edge to the tail tip. Another feature is that there is a large white patch near the upper wing tip. So in filght, the three white patches on the upper parts (the tail plus one near each wing tip) is very different to Common Buzzard.

There are very few information in field guides on Upland Buzzard. Aging is certainly the most difficult parts. I am not 100% certain on the aging, but the view I presented is originated from the view of Prof LX Li, who is a ornithologist working in Qinghai for a long time. I am aware that the iris colour is different for different age of Common Buzzard (ref: the book on Middle East Raptors). I don't know whether it can be equally applied to other Buzzards. I have assigned pale iris birds as adult, and dark iris birds as immature. One of the objectives of putting this up on the web is to start a discussion on this topic.

Note that the first bird (labelled dark phase adult) have a white tail. I have no impression of the bird having a large bill. So I am pretty sure that it is a Buzzard.

HF Cheung

Title: Re: Upland Buzzard 大鵟 (Qinghai 青海)
Post by junglej on Feb 2^nd, 2006, 4:51pm

Very interesting set of photos. Re Mike T's post, no, the dark bird is not a Steppe Eagle (nor other Aquila), as HFC has already pointed out, it is indeed Upland Buzzard. The Steppe Eagle has a huge grinning yellow gape at all stages & ages, stretching to at least the back of the eye, or beyond, and is therefor easily recognizable (every Steppe Eagle I've seen shows this feature, and I've seen many hundreds if not thousands, admittedly mostly from the western parts of their range). ;)

Title: Re: Upland Buzzard 大鵟 (Qinghai 青海)
Post by miket on Feb 2^nd, 2006, 9:15pm

God, I'd forgotten all about this one.

Thanks for bringing it back to attention JungleJ. You really are snapping at my heels today ;)

Think I already accepted Ho Fai's confirmation that it was indeed UB, but looking at it again is a good reminder, especially as it is a species we hope may wander to HK one day.

Mike Turnbull

Title: Re: Upland Buzzard 大鵟 (Qinghai 青海)
Post by junglej on Feb 4^th, 2006, 1:27pm

Sorry Mike, did not mean to offend. I actually posted this one months ago but the original post got lost in the hacking incident and I did not bother to re-post it till yesterday when I referred to it and realized the original message post was not there any more. Yep, apart from the gape feature the bird is buzzard-headed. Cheers and best wishes - JJ :)

Title: Re: Upland Buzzard 大鵟 (Qinghai 青海)
Post by Hendrix on Feb 6^th, 2006, 11:36pm

http://www.look.hk/wings/china/buzzard/001.jpg

http://www.look.hk/wings/china/buzzard/002.jpg

is this the same kind of Buzzard ?

Shandong near out let of yellow river 山東近黃河口

4/2/06

Title: Re: Upland Buzzard 大鵟 (Qinghai 青海)
Post by junglej on Feb 18^th, 2006, 4:42pm

Great pix Hendrix; yes, it is. Note the partial leg feathering and pale upper-wing patch as well as whitish-background upper tail. Tail is quite heavily barred as the bird is prob a juvenile (1st year). Leg feathering is variable but most Uplands seem to show at least some.