Question

Which of the following statement(s) most accurately describes their relationship?

The cattle egret eats the insects that are disturbed as the cow walks. The egret gets food and the cow is harmed.

The cow is not harmed by the cattle egret. The egret, however, is harmed by eating the insects from around the cow.

The cattle egret eats the insects that are disturbed as the cow walks. The egrets get food and the cow is unharmed.

Both the cow and the cattle egret benefit from the relationship. The cattle egret gets food and the cow is not bothered by the insects.

Neither the cattle egret nor the cow are benefiting from the relationship. They just live near each other.

Answer 1

The most accurate statement is:

"The cattle egret eats the insects that are disturbed as the cow walks. The egrets get food and the cow is unharmed."

This is a classic example of commensalism — the egret benefits while the cow is neither helped nor harmed (some sources note a possible small benefit if parasites are removed, but the standard description is commensalism).