The player scares them away by throwing the ball (with the swipe of a finger
across the screen). The dog retrieves the ball. The game gives 1000 points for
the player at start. If Hungry Larks keep pecking, they would empty the field
in no time and the points would come down to zero.
Throwing the ball at Hungry Larks makes them angry and the birds fly away. For each
ball thrown by the player, he/she loses certain points. (So the throws are kept minimum.)
Again, when the dog retrieves the ball, it makes them angry and the birds fly away.
For each bird flying off, points keep increasing. The game ends when no birds
are left or when no seeds are left.