The Grass is already shaking nicely in the wind.
With flying dust haze indicating the windsstrenght.

The birds especially like to pick on the a corpse...
and hysterically fly away and circle around the scene when the player comes too close.
When the player leaves, they will eventually land back at their
favorite spot, to continue their dirty deeds.

(I liked this mechanic in JaggedAlliance 2, if anyone remembers)