This is a riddle. The story goes like this:
Once upon a time, Lata Mangeshkar was traveling through mango plantations of Malda. Her car broke down. So the driver went down to the nearest plantation to ask for help.
The owner of the plantation soon figured out that it was none but the queen of melody traveling in the car. So he put a condition for getting the help (which could arrive only after two hours) that Lata sings a few songs under a majestic langra mango tree.
He wanted her to sing under that tree with a belief that the seven generation old tree would bear sweeter mangoes after Lata sings underneath.
Seeing no loss, Lata agreed. Soon harmonium and tabla were drawn out, sitting arrangement were done and a small crowd got around and Lata started singing.
First song, second song and third song went bye. Before she could start the fourth song, a crow dropped from the mango tree dead.
A: The crow had diabetes!