Calcium sources and insoluble grit have different jobs

1. 01

   Identify the material

   Read the composition. A fine particle size alone does not establish whether a grit mixture is soluble or insoluble.

2. 02

   Separate the roles

   Finches hull their seeds and do not need insoluble grit to grind seed. Soluble calcium has a nutritional role that must be considered separately.

3. 03

   Review the ration

   Check existing calcium and vitamin D3 from food and other products. Do not turn a free-choice mineral product into an invented measured supplement dose.

The bowls illustrate different materials, not a recommendation to offer every material together or without limit.