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Subject: 普通燕鷗 Tibetana 亞種 Common Tern Tibetana [Print This Page]
Author: BWA    Time: 31/08/2008 23:11     Subject: 普通燕鷗 Tibetana 亞種 Common Tern Tibetana

31/8/08 塔門 Tap Mun

Image Attachment: 080831 DSC_0601 Common Tern.jpg (31/08/2008 23:11, 82.34 KB) / Download count 703
http://hkbws.org.hk/BBS/attachment.php?aid=2065

Author: HFCheung    Time: 1/09/2008 23:37

This autumn seems to be pretty good for Common Tern.  I am quite sure the group of 9 to 10 that we saw in early-August near Tern Island are Common.  Although Common does not breed in HK, it does pass through in good numbers regularly.

HF Cheung
Author: Sze    Time: 1/09/2008 23:39

有什麼好方法去分辨普通燕鷗與粉紅燕鷗呢? 謝!
Author: lchunfai    Time: 2/09/2008 12:18

Quote:
Original posted by Sze at 1/09/2008 23:39
有什麼好方法去分辨普通燕鷗與粉紅燕鷗呢? 謝!
普通燕鷗次級飛羽下有深色橫帶

重有粉紅燕鷗的嘴是否全紅

有錯請見諒
Author: HFCheung    Time: 2/09/2008 20:05

有好照片，可檢查尾尖與翼尖的相對位置，粉紅尾很長，尾尖在翼尖之後。
飛起時 Chunfai 的方法可以，但最簡單可能是檢查背部，普通燕鷗有明顯的白腰。

張浩輝
Author: Sze    Time: 2/09/2008 20:53

Thank you lchunfai and Dr. Cheung!
Author: lchunfai    Time: 2/09/2008 21:33

Thank you Dr. Cheung A new method for me
Author: BWA    Time: 4/09/2008 00:21

飛行中 In flight

31/8/08 塔門 Tap Mun

Image Attachment: 080831 DSC_0668 Common Tern T.jpg (4/09/2008 00:21, 69.91 KB) / Download count 569
http://hkbws.org.hk/BBS/attachment.php?aid=2078

Author: HKBWS Bonnie    Time: 4/09/2008 13:02

多謝BWA! 好明顯既白腰呢!



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