When similarly adapted species overlap geographically, closer inspection reveals subtle ecological differences in their habitat or dietary requirements.

The two species do not overlap and there is no intergrade zone.

Despite its common name, this species broadly overlaps in size with the common eland (Taurotragus oryx).

The two species overlap partly in range, although they are rarely seen together in the same locations.

"They were caught fraternizing with the Audubon warbler," he said, "and the species overlapped."

Both species overlapped at one point in time.

In the 1950s, botanists found two new species in the regions of Idaho and Washington, where the three already known species overlapped.

The existence of character displacement is evidence that the two species do not completely overlap in their niche requirement.

This species often overlaps in range with the less scarce Harpy Eagle, which is likely its close relative and is somewhat similar to appearance.

Although large male chimpanzees can exceed any bonobo in bulk and weight, the two species actually broadly overlap in body size.