The breeding sites of Virginia's warbler and orange-crowned warblers overlap in central Arizona.When one species was experimentally removed,the remaining species fledged greater percentages of young per nest.The experimental removal of one species indicates that

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The experimental removal of one species and the resulting increase in productivity of the other species suggests that the two species were in competition for resources. This is an example of interspecific competition, where two different species compete for the same resources in the same habitat. The other options, like intraspecific competition, differential resource utilization, or niche differentiation, do not explain the observed result of the experiment.

The Breeding Sites of Virginia's Warbler and Orange-Crowned Warblers Overlap