查看完整版本: Shrike ID Please.

9Wi 9/10/2013 13:23

Shrike ID Please.

地點 : 塱原 LV

日期 : 2013-10-08

A/
[img]http://farm4.staticflickr.com/3787/10164550106_33107cb5a3_o.jpg[/img]

[img]http://farm8.staticflickr.com/7446/10164487455_de2c0b8c16_o.jpg[/img]

B/
[img]http://farm6.staticflickr.com/5476/10164488885_7efd245b3a_o.jpg[/img]

根據 According to :

[url]http://www.cnbird.org.cn/shouce/c.asp.htm[/url]

[img]http://farm4.staticflickr.com/3834/10164413154_d8d87d5d32_o.jpg[/img]

[img]http://farm4.staticflickr.com/3801/10164414044_9621152e21_o.jpg[/img]

A 是棕背伯勞? 身和尾羽的比例是~ 1:0.473 ; 尾羽無白邊。
  Is it a Long-tailed Shrike? As the ratio of the body to the tail is appro. 1:0.473; No white edge is observed on tail feathers.

B 是栗背伯勞? 身和尾羽的比例是~ 1:0.425 ; 尾羽有白邊。
  Is it a Burmese Shrike? As the ratio of the body to the tail is appro. 1:0.425; White edge is observed on tail feathers.

Many thanks!

John Holmes 9/10/2013 14:19

Mystery shrike ?

It is Long-tailed Shrike...

The rufous on the back of Burmese Shrike is quite intense, and Burmese Shrike looks relatively compact.

Photo here [url=http://orientalbirdimages.org/search.php?p=9&Bird_ID=2403&Bird_Family_ID=&pagesize=1]http://orientalbirdimages.org/search.php?p=9&Bird_ID=2403&Bird_Family_ID=&pagesize=1[/url]

"O.B.I." is a good photo-reference site for many asian species.

9Wi 9/10/2013 14:40

Many thanks John. 3551f6eb47d3445

ajohn 9/10/2013 15:02

Bird B is moulting it's tail, and I think has lost the longest inner tail feathers. This makes the tail look shorter than normal, which is one reason for your confusion.
The small pale tip/fringe to the tail feathers is typical in Long-tailed Shrike but can wear off over time.

9Wi 9/10/2013 21:09

Thanks ajhon for the explanation. 3551875328cc445
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