The Sibley–Monroe checklist is a list of bird species based on a study conducted by Charles Sibley and Burt Monroe.
It drew on extensive DNA–DNA hybridization studies to reassess the relationships between modern birds.
maintain that while it marks a leap forward so far as the evidence from DNA–DNA hybridization goes, it pays insufficient attention to other forms of evidence, both molecular and on a larger scale.
There is no true consensus, but the broad middle-ground position is that the Sibley–Monroe classification, overall, is "about 80% correct".
[citation needed] Research and debate concerning bird classification continue.