Disclaimer: This is the Tamron A035N 100-400mm F/4.5-6.3 Di VC USD Lens and this is not a Lens Review. I have taken this lens as my primary telephoto landscape lens and may be some wildlife and birding if I get chance.
Details on where and how I tested this lens.
Location: Vatra Lake (or Bill), Malda, West Bengal, India.
Time of Day: From an hour before Sunrise to an hour after Sunrise.
Subjects: Egrets, Cranes, Storks, Pied Kingfishers and Pond Herons.

So, this is not going to be a long writeup but more of a photo-blog where I will just put down some of my test shots I have taken with the Tamron A035N lens on my Nikon D750.
I have divided the photos into three sections, one where I have taken some Egrets, Kingfishers and Cranes in golden hour on the lake where they are trying to catch fish out of water; and the other one into more of a fine-art structure where I try to capture details of some flying birds using the lens's fast-focusing capabilities; the last section comprises of some other simple stories that I have tried to create with the lens.
Okay, no more words, lets have a look at the images . . .
Section 1: Golden Hour Shots
Section 2: Fine Art Images of Flying Birds
Section 3: Other Images
These were some of the test photos I have taken with the Tamron A035N on Nikon D750. I am not a bird photographer but this location seemed very subtle and beautiful to test this lens with these majestic birds having their breakfast.