What is Sibley-Monroe checklist 1?
The '''Sibley-Monroe checklist''' was a landmark document in the study of [[bird]]s conducted by [[Charles Sibley]] and [[Burt Monroe]] during the late 1970s and throughout the 1980s.<ref>Sibley & Ahlquist (1990)</ref> It drew on extensive [[DNA]]-DNA [[speciation|hybridisation]] studies to reassess the relationships between modern birds. There are {{formatnum:9994}} species on the checklist. ==References== {{reflist}} [[Category:Birds]]