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        Discussion Area 討論區 >> Photo Gallery 相片分享 I >>  Eurasian Skylark 雲雀
        
(Message started by: HF_Cheung on Nov 5^th, 2002, 11:05am)

Title: Eurasian Skylark 雲雀
Post by HF_Cheung on Nov 5^th, 2002, 11:05am

147 Eurasian Skylark 雲雀
Long Valley 塱原
03/11/2002
Assuming that you know this is a Skylark from the first photo, go to the second picture.
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/Dscn0409.jpg
http://www.hkbws.org.hk/fileServer/PhotoG/hfcheung/Dscn0408.jpg
Note the three tertials marked by red pointers above the tail in the photo, and also the tip of the longest primary.  Note that the tip of the longest primary is roughly 0.5 in (1.3 cm) longer than the tip of the longest tertial.  This is a good field mark for Northern Skylark (effectively rule out Oriential Skylark).