There are two different species of finch that live on the same small island, species a and
species b. both species successfully feed and reproduce on the island. species a nests in
pine trees and eats large seeds. species b nests in hollowed-out dead logs and eats small
insects.

both bird species a and species b can most likely survive on the same small island because they
(1) use different resources and, therefore, they do not compete
(2) mate with each other, keeping both populations constant
(3) compete for food, but do not compete for shelter
(4) eat the same food, but feed at different times of the day