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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Id please Alentejo Portugal (1 Viewer)

Bert

Birdwatchingalentejo.com
Over the last weeks I have made photos of what probably is a Chiffchaff but I wonder why there is a yellow stripe on the upper part of the wing. I can not find that yellow stripe (just below the black stripe on the wing) anywhere in my books but have at least 10 different photos with it at different times.
Can you help me please?
Thanks,
Bert
 

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