Matthew 13:4. “And when he sowed, some seeds fell by the way side, and the fowls came and devoured them up.”
Later in this chapter, Jesus explained His parables. You can read this explanation in verses 18-23. This first picture, of the seed that fell by the wayside and was eaten by birds, is just the beginning of an extremely important description of what can happen to the good seed.
The wayside was hard ground, traveled and packed down by many feet. When the good seed fell on this hard ground, birds spotted it and devoured it quickly so that there was no possibility that it would take root and grow.
The human heart can be hard like the wayside. It does not absorb the seed. It does not welcome the good seed that lands on that hard heart, and provides the seed no place to root and grow. Birds, in the scripture, never represent anything good. Instead, they represent that which is evil, and in this parable they represent that wicked one himself, Satan, who is ever alert for seed falling by the wayside where he can devour and destroy it before it can find a place to produce fruit.