isaac_chan

184 Black-naped Tern 黑枕燕鷗
August 2009
D2x + AF-S VR 300mm + 1.7x

This juvenile Black-naped Tern was found in August 2009 during tern survey. When we saw it the first time, its wing was missing primaries already. It could fly, but was quite clumsy and close to the water surface most of the time.

What could be the reason(s) to its damaged wing?

2009/8/22


2009/8/29

HFCheung

Made a mistake in flight or landing? Collision damaged the wing, I think.

HF Cheung

isaac_chan

I think it might be dropped from its "nest" to lower rocks when it's still a chick.

isaac_chan

有台灣鳥友請教野生動物獸醫師所給的意見:

Quote:

我請教了野生動物獸醫師，這隻鳥的狀況光看照片不容易確認造成翅膀損傷的原因，除了外力因素，也可以考慮先天性的畸形。野鳥救傷的案例中，通常骨折後羽毛仍能夠長出來，但這隻的飛羽看起來長不出來，因此先天畸形的可能性是有的。
以上供您參考

http://nc.kl.edu.tw/bbs/showthread.php?t=29637