Yellow-bearded Bulbul © flickr.com

Yellow-bearded Bulbul (Criniger olivaceus) and White-bearded Bulbul (Criniger ndussumensis) (Sibley and Monroe 1990, 1993) are retained as separate species contra Dowsett and Forbes-Watson (1993) who include ndussumensis as a subspecies of Yellow-bearded Bulbul (Criniger olivaceus).

Considered by some authors to form a superspecies with White-bearded Bulbul (Criniger ndussumensis) and others them as conspecific, on basis of vocal and behavioural similarities (responds to playback of song of that species). Considerable differences in coloration suggest that, although unquestionably closely related, the two are better treated as distinct species. This supported by results of recent molecular studies, which even suggest that present species is sister-taxon of Red-tailed Bulbul (Criniger calurus), rather than of White-bearded Bulbul (Criniger ndussumensis).

Similar Species
Western Bearded Greenbul (Criniger barbatus) which is smaller and has green, not greyish-brown, underparts, and less puffy throat.


References
See References.


Files:

BirdLife International For more information about the Yellow-bearded Bulbul see... BirdLife International Species Factsheet. Articles about the Yellow-bearded Bulbul If you would like to read any articles about the Yellow-bearded Bulbul... Show Articles (0) No Pictures of Yellow-bearded Bulbul If Birdpedia has no pictures of Yellow-bearded Bulbul or you would like to see more, then try the following...       From BING (5) No Videos of Yellow-bearded Bulbul If Birdpedia has no videos of Yellow-bearded Bulbul or you would like to see more, then try the following..       From BING (0) Where can I observe this species? Select an area (or leave blank) to see locations where this species has been recorded. Area   CONGO   All    Optional: Complete the following if you wish to restrict the reserve to within a given distance of a location. Please enter the Latitude and Longitiude of a given location together with the maximum distance (km) to display a list of reserves within that distance. You must enter a Latitude, a Longitude and a distance greater than 0.   Latitude: (Decimal degrees takes precedence) Deg Min Sec     Decimal degrees (Include compass setting or value)          N S or   GPS help Longitude: (Decimal degrees takes precedence) Deg Min Sec     Decimal degrees (Include compass setting or value)          E W or   Find GPS using Google Maps Distance Bearing     N NE E SE S SW W NW Get Sample GPS readings On What Field Trips was this species observed? Select an area (or leave blank), and a date range, to see field trips on which this species has been recorded. Area   CONGO   All    From To     Optional: Complete the following if you wish to restrict the reserve to within a given distance of a location. Please enter the Latitude and Longitiude of a given location together with the maximum distance (km) to display a list of reserves within that distance. You must enter a Latitude, a Longitude and a distance greater than 0.   Latitude: (Decimal degrees takes precedence) Deg Min Sec     Decimal degrees (Include compass setting or value)          N S or   GPS help Longitude: (Decimal degrees takes precedence) Deg Min Sec     Decimal degrees (Include compass setting or value)          E W or Distance Bearing     N NE E SE S SW W NW Get Sample GPS readings Latest Sightings for Yellow-bearded Bulbul Select the Area to restrict the Sightings. Area   CONGO   All