Question

question 17
which of the following is an example of resource partitioning?
earthworms feed on organic material in soil, and then robins feed on the earthworms.
two species of birds forage together, with one eating insects on tree trunks while the other eats insects in the outer branches.
deer and mountain lions feed on different kinds of food.
two male ostriches share a harem of females.
two species of rodents compete for the same seed resource, and one species causes the other to become extirpated (locally extinct).

Explanation:

Resource - partitioning is when species divide a resource based on differences in their behavior or morphology. The birds foraging in different parts of the tree are dividing the insect - resource. The first option is a food - chain example, the third is about different food preferences not resource partitioning, the fourth is about mating behavior, and the fifth is about competition leading to extirpation.

Answer:

Two species of birds forage together, with one eating insects on tree trunks while the other eats insects in the outer branches.