There's a city where the birds fall from the sky, Black Kites are downed, it's not really clear why, the concentrations of pollution, adaptation, evolution, at least someone's around, to fix their wings and fly.

It's a steady meander, as we're introduced to three residents of Delhi and their mission to save the increasing number of birds that fall from the often polluted skies of the city, after surviving on the waste and refuse left to decay and decompose in a far from insubstantial landfill; with the mount they're estimated to consume on said landfill quite startling.

It's not polished by any means, what you see is what you get, three guys making the best use of the resources available to them to save the inelegance of a Black Kite down.

This beautiful documentary is nominated for the documentary Oscar, and I can see why.

It's a unique study of urban wildlife in one of the world's most densely populated, troubled and polluted cities, yet it teems with wildlife.

We see rats, wild pigs, cattle, camels, frogs, snails and owls, as well as the movie's avian heroes, Black Kites.

These revered birds are finding life tough in modern day Delhi, and as they fall, ill broken, from the sky in increasing numbers two brothers, in a makeshift domestic avian hospital, nurse them back to health and freedom in increasing numbers.

It's a slow reveal that some may find tedious.

Others, like me, will revel in its delicious unfolding of life, in abject squalor, in a Delhi slum. (And yet, I kept getting the feeling that this was a middle class neighbourhood we were witnessing/exploring).

The brothers, and their extended family, live in such a hovel that it's difficult to comprehend the work they do, or how they do it on such limited resources, on top of a day job, and the value this brings.

It's a wonderful exploration of nature as you have never seen it before, and deserves all the credit it is getting.