SCARECROWS ONLY SCARE THE UNINFORMED
Scarecrows fool crows only for a couple of days; their scare effect doesn't last long. On the third day the crows quickly discover that they are nothing but lifeless and powerless mannequins made to scare them, and they start to shit on them.
Fear no man born of flesh. If anyone erects a scarecrow in your field of life, make it your launching and landing pad, and make sure you take a dump on them on your way up.