Ecologist Robert MacArthur observed that five species of similar warblers coexisted on spruce trees because they
A)ate different kinds of insects.
B)cooperated in their foraging habits.
C)foraged in different places of the tree canopy.
D)were actually subspecies of the same species.
E)were kept below the carrying capacity by predators.

Question

Quizplus · Accepted Answer

MacArthur observed that the warblers coexisted by foraging in different parts of the tree canopy, thus reducing direct competition for resources.

Ecologist Robert MacArthur Observed That Five Species of Similar Warblers