English and Scientific names:

Sulphur-bellied Flycatcher (Myiodynastes luteiventris)

Number of individuals: 

One presumed HY (see below)


Jefferson Parish

Specific Locality:

Sureway Woods (TNC Landry-LeBlanc Tract) off Post Ln., Grand Isle

Date(s) when observed:

4 October 2010

Time(s) of day when observed:  

~1:45 1:50 PM, 3:15 3:17 PM CDT

Reporting observer and address:

Devin Bosler Lancaster, PA 17601

Other observers accompanying reporter who also identified the bird(s):


Other observers who independently identified the bird(s)

Eric Liffmann (originally found bird around 8AM), Malcolm Mark Swan, Alan Kneidel, Mason Cline

Light conditions (position of bird in relation to shade and to direction and amount of light):

Partly cloudy sky with optimal midday sunlight. Sun angle high and backlighting not a factor.

Optical equipment: 

Zeiss Victory FL 8x42, Kowa TSN 881 Angled 88mm scope w/ 20-60x optical zoom, Canon Powershot SD1100 IS digital camera (all equipment in excellent condition)

Distance to bird(s): 

within ca. 10 meters

Duration of observation:

~ 5 8 min.


Disturbed, semi-open, mature live oak-hackberry-honeylocust coastal woodlot w/ dense yaupon-elderberry-pokeweed understory and brushy baccharis-goldenrod-lantana edges.

Behavior of bird: 

Actively fly-catching (primarily on Odonates) from subcanopy and canopy, occasionally from open, exposed perches on dead limbs/branches. Silent throughout encounter. Observed in flight during foraging attempts.



Large, distinctive flycatcher with bold facial pattern and heavily streaked underparts. Upperparts dark brown with pale wing edgings. Extensive yellow wash on underparts with heavy, dark streaking on sides and flanks. Strikingly patterned head with dark mask and malar stripes contrasting with white supercilium, moustachial mark, and throat. Coarser, mottled dark streaking on whitish neck-sides and throat. Dark gray-brown crown. Relatively long, heavy, mostly dark bill with pale base to mandible. Pale flesh gape. Uppertail coverts and proportionately short tail entirely rufous. Dark brown irides. Grayish tarsus and feet.


Apparent hatch-year (partial molt to first basic) with duller and paler upperparts than adult, replaced inner primaries and retained juvenal outer primaries (perhaps worn cinnamon-buffy edging), retained juvenal tapered rectrices, and juvenal-like pale fleshy gape.



Similar species:

Superficially similar to Streaked Flycatcher (Myiodynastes maculatus) but eliminated on basis of plumage/bare part characteristics. Streaked Flycatcher lacks dark chin connection of malar stripes, possesses heavier bill with paler lower mandible, and whiter underparts.


Photographs or tape recordings obtained?

Yes, digiscoped by Devin Bosler. Yes, attached.

Previous experience with this species: 

Fairly familiar with this species from multiple trips to se. AZ. No field experience with Streaked Flycatcher, however.

Identification aids:

National Geographic Complete Birds of N.A. (Alderfer et al. 2005).

This description is written from: 

notes made during the observation, notes made after the observation, memory.

Are you positive of your identification? If not, explain: 


Yes, very positive.

Date and time: 

10 October 2010

9:30 PM CDT