The feces of birds and mammals can also be used to assess ecosystem health. Research this methodology and provide two examples of animals used for these studies and the types of materials that are identified in their feces

Birds and leopard

Explanation:

It has been researched and discovered that the feces of birds and animals can be used to determine the state of health of an ecosystem.

For example, it has been discovered that hormones and other substances are excreted through urine and feces. And researchers have discovered from the feces of leopards, that a leopard that has cave or trees where it can hide from hunters are not likely to be stressed out like the one that does not have.