River Precision principle
Lessons from Ibisbill
Probe the stones.
Curved-Bill Stone Probing
Core lesson
Precision belongs to the one shaped for the narrow places between stones.
Biological basis
Ibisbills use long downcurved bills to probe among stones and gravel in fast mountain streams for aquatic invertebrates.
Best use cases
Where this lesson tends to be most useful in practice.
PrecisionRiver focusSpecialized toolsSearching gapsMountain streams