HKBWS Forum 香港觀鳥會討論區 - Powered by Discuz! Board

Subject: [Nightjar] 歐夜鷹 ? European Nightjar ? [Print This Page]

Author: 9Wi Time: 9/10/2016 16:58 Subject: 歐夜鷹 ? European Nightjar ?

日期 : 2016-10-08

地點 : Wetland Park

Eqpt. : D7100 + Sigma 120-300mm f/2.8 Sports + 1.4x

Author: ajohn Time: 10/10/2016 17:33

I don't see any reason to suggest that this is a European Nightjar, which would be an exceptional record in East Asia, rather than Grey Nightjar, which is a regular passage migrant.
The two are similar in plumage, as are many nightjar species, but for me the following features point towards Grey Nightjar:
- Lesser Covert pattern. The coverts show a pattern of buff spots towards the feather tips. European Nightjar should show an obvious white bar across the coverts.
- Scapulars. Photos of European Nightjar typically show a band of black and white feathers across the scapulars, creating a stripe along the side of the mantle. This seems to be lacking in your bird, which instead has black tips to the scapular feathers.

You're lucky to get such a good view of the bird - it's really difficult to see nightjars during the daytime.

European Nightjar:
http://orientalbirdimages.org/se ... Bird_Image_ID=32928
http://orientalbirdimages.org/se ... y_ID=&Location=

Grey Nightjar:
http://orientalbirdimages.org/se ... y_ID=&Location=

Author: 9Wi Time: 11/10/2016 10:03

Quote:

Original posted by ajohn at 10/10/2016 17:33
I don't see any reason to suggest that this is a European Nightjar, which would be an exceptional record in East Asia, rather than Grey Nightjar, which is a regular passage migrant.
The two are simil ...

Many thanks for clarification.

Welcome to HKBWS Forum 香港觀鳥會討論區 (http://hkbws.org.hk/BBS/)