Where have the Birds gone?

I looked at the sky yesterday.It was bleak and filled with smoke.
The one thing that struck me was the "EMPTINESS".

Now the flashback-I look back on my childhood.
I studied in a defence cantonment.I remember the myriad birds which filled the sky.

I remember seeing mynahs,parrots,sparrows,bulbuls,cuckoos,drongos,
thrushes.Their used to be a lot of birds other than the common crow.

I even remember seeing carrion birds like the kite and eagle.
But Now...,I am a bit puzzled,have all the birds been rusticated from the cities
due to the extreme pollution levels and excess urbanization..??!!
I occasionally see crows!!.kudos to the resilient bird.

Anyways I wish bird watchers do more to conserve urban birdlife rather than just bird watching in remote bird sanctuaries.

As i pondered.."Where have the birds gone??"..I reply to myself..."Wish they were back...".