Brothers Nadeem and Saud grew up in Delhi watching the majestic raptors called black kites circle in the sky above their heads. But every year, when paper-kite-flying season came and people brought out their glass-coated kite strings called manja to have friendly battles, the beautiful birds faced dangerous skies. One day, the brothers found a black kite tangled in manja, but their local vet couldn't help. As they got older,...