Birds are irresistible photographer magnets. I think it's because they are mostly anonymous, whereas mammals seem to have an individual identity. So that makes something mysterious about birds. And when they are joined together as a single organism, something rather unsettling too. Hitchcock knew that a flock of malevolent black birds was way more scary than a herd of grumpy elephants. Thank you.
I like the way your lines divide the frame. Handsome light. The silhouettes of the birds against the ominous sky are, well, ominous. The birds on the crosspiece of the pole in the lower right is a nice touch. I tried for a bunch of birds in a tree this morning but they took obvious delight in yanking my chain.