Hi Rithwik,
Welcome to CNP. Receeding birds against the evening sun create a feeling of distance. You are right negative space does have the intended effect. Deep colors add to the mystery here. Looking forward to more !
Thanks for sharing

Rithwik, welcome to CNP !! Hope you will enjoy participating here. We are a bit slow in commenting, so please bear with us

Back to the image, without those two birds it would have been yet another sunset image. Birds crossing a setting sun isn't new either. But this one has a mood created by those tiny little curves placed one above the other there. The size of the birds on the sun is perfect for my taste buds. Isn't that interesting how a very subtle nuances like this greatly impact human mind ? I think just a little wider perspective would have added further. Thanks for sharing.