This young bird must be ready to fly however her leg was entangled on the nest where she was hatched.
The poor bird must have died due to starvation.
Usually if they have nothing to eat for about three days they will die of starvation.
The cause of this mishap is dryness or low humidity in the BH.
The low humidity causes the nests to crack.
These crack opening become a kind of trap and waiting for some thing to happen.
If these young birds are not careful and accidentally their leg are caught that it.
Case No 2):