HKBWS BBS » ´ä Æ[ ³¾ ·| ·s »D ²Õ


    
      
        HKBWS BBS » ´ä Æ[ ³¾ ·| ·s »D ²Õ
        (http://www.hkbws.org.hk/cgi-bin/YaBB.pl)
      

        Discussion Area °Q½×°Ï >> Bird Identification ³¾Ãþ¿ëÃÑ >>  Crested Goshawk »ñÀYÆN
        
(Message started by: me_domchan on Feb 14^th, 2004, 6:05pm)

Title: Crested Goshawk »ñÀYÆN
Post by me_domchan on Feb 14^th, 2004, 6:05pm

075 Crested Goshawk »ñÀYÆN
Mai Po ¦Ì®H
14/2/2004
EOS 10D+ 70-200 + 1.4X

Is this a falcon?   ???
(Images cropped )

http://www.fotop.net/albums/dominicchan/dominicchan01/raptor_01.jpg

http://www.fotop.net/albums/dominicchan/dominicchan01/raptor_02.jpg

http://www.fotop.net/albums/dominicchan/dominicchan01/raptor_03.jpg

Title: Re: Raptor ID help
Post by KK Hui on Feb 14^th, 2004, 8:19pm

The distinctive barred tail and the underwing pattern lead me to believe it is a female Northern Sparrowhawk.

Nice shots, BTW! ;D

KK Hui ARPS
www.geocities.com/kkhui_001

Title: Re: Raptor ID help
Post by me_domchan on Feb 14^th, 2004, 9:01pm

Thanks!

I must be very lucky for "bumping" into it today!
:D

Title: Re: Raptor ID help
Post by guest on Feb 14^th, 2004, 9:25pm

Please note the mesial stripe, I will consider it as a Besra.

Title: Re: Raptor ID help
Post by MW on Feb 15^th, 2004, 1:54am

³ï¥¡½u²`¶Â¦â¥BÅãµÛ¡A©Ò¥H¥iªÖ©w¬OªQ³¶ÆN Besra Sparrowhawk

Title: Re: Raptor ID help
Post by panpan on Feb 15^th, 2004, 2:32am

·|¬O»ñÀYÆNªº¥®³¾¶Ü? ???
¦]¬°¦³©úÅã¥Õ¬Ü, ¦Ó¥B¸¦æ®ÉÂùÁl©ñ±o«Ü¥ :P
½Ð«üÂI :)

Title: Re: Raptor ID help
Post by Falcon on Feb 15^th, 2004, 11:18am

I think this one is a Crested Goshawk juvenile. Its wings are rounded when it is flying.

Title: Re: Raptor ID help
Post by me_domchan on Feb 15^th, 2004, 3:25pm

May be I try to get more photo here tonite,
also this raptor flips its wings quite frequent when "hovering"

The size of this raptor is small, overrall length is similar to that of Magpie.

Will it be somekind of Vulture? As it looks similar to "¦Ç±øl" in a Taiwan Book.

Title: Re: Raptor ID help
Post by Falcon on Feb 15^th, 2004, 6:29pm

Hovering would be one of the best ways to identify the Crested Goshawk inflight. ;) Also note the roundish tail while perching.

Title: Re: Raptor ID help
Post by me_domchan on Feb 15^th, 2004, 6:42pm

on 02/15/04 at 18:29:11, Falcon wrote:

Hovering would be one of the best ways to identify the Crested Goshawk inflight. ;) Also note the roundish tail while perching.

But isn't that black kite hover too?
Did I use the wrong word?
I mean it flies in a circle....

Title: Re: Raptor ID help
Post by Falcon on Feb 15^th, 2004, 7:17pm

Sorry, i think i am using the wrong word. The Crested Goshawk will flap its wings frequently inflight. ;)

Title: Re: Raptor ID help
Post by me_domchan on Feb 15^th, 2004, 10:11pm

Some more photos.  
:)
This time the photos are larger
http://www.fotop.net/albums/dominicchan/dominicchan01/raptor_04.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/me_domchan/me_domchan_070.jpg
http://www.fotop.net/albums/dominicchan/dominicchan01/raptor_05.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/me_domchan/me_domchan_071.jpg
http://www.fotop.net/albums/dominicchan/dominicchan01/raptor_06.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/me_domchan/me_domchan_072.jpg
http://www.fotop.net/albums/dominicchan/dominicchan01/raptor_07.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/me_domchan/me_domchan_073.jpg

Title: Re: Raptor ID help
Post by TH_Kwan on Feb 15^th, 2004, 10:27pm

Some other points supporting that this bird is Crested Goshawk are listed below:
1. lack of a notch at the primaries which is more suggestive of Besra.
2. Head body : tail ratio about 1: 3/4 (should be 1:1 in case of Besra)
3. A faint whitish vent is visible though not very prominent in this bird, suggestive of Crested Goshawk.
4. Typical call and flying behaviour.

A very good reference book from Taiwan concerning identification of raptor ¥xÆW½àÆN¹ÏÅ² is worth reading.

Title: Re: Raptor ID help
Post by me_domchan on Feb 16^th, 2004, 9:36am

Thanks TH_KWAN,

So this is a juvenile Crested Goshawk?

Wow.......I am very lucky! ::)

Title: tinRe: Raptor ID help
Post by Paul Leader on Feb 16^th, 2004, 4:51pm

This is indeed a first-winter Crested Goshawk, it can be quite easily told from all other first-winter accipiters in Hk due to the combination of a well-marked mesial and almost unmarked breast, belly and flanks. All other first-winter accipiters are very marked below by comparision.

These excellent photographs also show the distinctive shape of CG in flight with the long tail and broad wings that are clearly pinched at the body.

Another good pointer towards Crested Goshawk are the very thick legs of this bird - all other accipiters in HK have clearly thinner legs.

Paul

Title: Re: Raptor ID help
Post by me_domchan on Feb 16^th, 2004, 9:57pm

Thanks all for the valuable inputs!

:-* :-*

Title: Re: Raptor ID help
Post by Rupert on Mar 1^st, 2004, 10:26am

As has been suggested, this is indeed a first winter crested goshawk. There is quite a bit of variation between immature individuals of this species and this one is a particularly pale and unmarked individual. Judging from around 30 immature birds admitted to the KFBG rescue centre over the years, around one in 10 are as pale and unmarked as this.

Title: Re: Raptor ID help
Post by me_domchan on Mar 1^st, 2004, 7:56pm

on 03/01/04 at 10:26:35, Rupert wrote:

Judging from around 30 immature birds admitted to the KFBG rescue centre over the years, around one in 10 are as pale and unmarked as this.

:o :o :o :o
Oh...how lucky I was!