Sulphur-bellied Tyrannulet © flickr.com

Genus as presently constituted is probably polyphyletic, and in need of further study. Syringeal characters suggest that present species and Rufous-winged Tyrannulet (Mecocerculus calopterus) are possibly related to Phyllomyias, specifically to Tyranniscus if latter resurrected.


References
See References.


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BirdLife International For more information about the Sulphur-bellied Tyrannulet see... BirdLife International Species Factsheet. Articles about the Sulphur-bellied Tyrannulet If you would like to read any articles about the Sulphur-bellied Tyrannulet... Show Articles (0) No Pictures of Sulphur-bellied Tyrannulet If Birdpedia has no pictures of Sulphur-bellied Tyrannulet or you would like to see more, then try the following...       From BING (3) No Videos of Sulphur-bellied Tyrannulet If Birdpedia has no videos of Sulphur-bellied Tyrannulet 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   COLOMBIA OCEAN   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   COLOMBIA OCEAN   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 Sulphur-bellied Tyrannulet Select the Area to restrict the Sightings. Area   COLOMBIA OCEAN   All