Things You'll Need
- Pieces of concrete or stone
- Crushed oyster shells
- Crushed charcoal
- Salt
- Large bucket
- Sledgehammer
Instructions
Place concrete pieces or rocks on hard surface. Smash with sledgehammer until pea-sized pieces remain. If grit is too large, pigeons won't eat it. If it is too small, they will have to eat it constantly. (Reference 1)
Place pea-sized gravel in large bucket.
Add crushed oyster shells in ratio of one part oyster shells to three parts gravel.
Add crushed charcoal in same ratio as oyster shells. Sprinkle mixture with small amount of salt.
Stir mixture until uniform. Provide grit to pigeons in covered tray to avoid contamination from droppings. (Reference 1)