Wonderfull! The synchronous curved wing pattern of all the birds make the image extraordinary. I presume this would have been n+1 attempt

An amazing monochrome masterpiece ! The dark and mysterious feel makes me relate them to "Dementors" from the Harry Potter movies. https://harrypotter.fandom.com/wiki/Dementor" onclick="window.open(this.href);return false;
Now as find this link to post an image of Dementors, I am assured it is nothing else but them ! You need to be cautious Ganesh because the description of Dementors is terrifying

"Dementors are among the foulest creatures that walk this earth. They infest the darkest, filthiest places, they glory in decay and despair, they drain peace, hope, and happiness out of the air around them... Get too near a Dementor and every good feeling, every happy memory will be sucked out of you. If it can, the Dementor will feed on you long enough to reduce you to something like itself... soulless and evil. You will be left with nothing but the worst experiences of your life."
—Remus Lupin's description of Dementors

An interesting link, Prathamesh!

Like the dark feel n subtle motion that flock them together, Ganesh.
Regards.