Abhishek, yes, this is with the EF 400L f5.6.
Sabyasachi, sorry no vertical. This was my first visit to the NE, Eaglenest was akin to a pilgrimage as a birding enthusiast. I consciouly tried to keep it a "birding first, photo second" trip. Light(ing?) can be very variable any time of the day, from one direction to the next and small clouds passing by all the time!
Regards.
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