LOUISIANA BIRD RECORDS COMMITTEE

REPORT FORM

     This form is intended as a convenience in reporting observations of species on the Louisiana Bird Records Committee (LBRC) Review List. The LBRC recommends the use of this form or a similar format when submitting records for review (to assure that all pertinent information is accounted for). Attach additional pages as necessary. Please print or type. Attach xerox of field notes, drawings, photographs, or tape recordings, if available. Include all photos for more obscurely marked species. When completed, mail to Secretary, Louisiana Bird Records Committee, c/o Museum of Natural Science, 119 Foster Hall, Louisiana State University, Baton Rouge, LA 70803-3216.

1. English and Scientific names: Brown-crested Flycatcher (Myiarchus tyrannulus)

 

2. Number of individuals, sexes, ages, general plumage (e.g., 2 in alternate plumage):

One, age/sex unknown

3. Locality: LOUISIANA: (parish) Plaquemines Parish

 

Specific Locality: Big Mar levee batture, nr. Braithwaite GC off LA-39, Braithwaite

 

4. Date(s) when observed: 15 February 2011

5. Time(s) of day when observed: ~2:00 2:10 PM CST

6. Reporting observer and address: Devin Bosler

104 Seattle St.

Lafayette, LA 70506

7. Other observers accompanying reporter who also identified the bird(s): none

8. Other observers who independently identified the bird(s): none

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

 

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

10. Optical equipment (type, power, condition): Zeiss Victory FL 8x42, Kowa TSN 881 Angled 88mm scope w/ 20-60x optical zoom (all equipment in excellent condition).

11. Distance to bird(s): within ca. 30-40 meters

12. Duration of observation: ~10 min. total

 

13. Habitat: Rural residential, semi-open abandoned golf course w/ mature live oaks, hackberry-willow-tallow batture woods, freshwater canal and other waterways, scrubby wooded edges, marshy edges along water bodies, short-grass levees, etc.

 

14. Behavior of bird / circumstances of observation (flying, feeding, resting; include and stress habits used in identification; relate events surrounding observation):

 

Actively fly-catching from willow/tallow subcanopy in batture woods. Becoming agitated and quite vocal by presence of nearby Eastern Phoebe (Sayornis phoebe). Generally moving west-east along batture woods. And finally losing track of bird while attempting to get positioned for photos. No playback available and attempts to relocate failed.

 

15. Description (include only what was actually seen, not what "should" have been seen; include if possible: total length/relative size compared to other familiar species, body bulk, shape, proportions, bill, eye, leg, and plumage characteristics. Stress features that separate it from similar species):

 

A large Myiarchus flycatcher, nearly twice the size of accompanying phoebe. Dark grayish-brown head, paler face, and contrastingly pale throat. Medium gray breast sharply contrasting with bright lemon-yellow belly and vent. Retrix pattern not clearly visible from viewing angle. Proportionately long, heavy, all-black bill. Dark irides. Blackish legs and feet.

 

16. Voice: A loud, sharp whip call, and occasionally followed by other slurred, burry burrk notes and complex tremulous whistles when agitated.

17. Similar species (include how they were eliminated by your observation):

 

Great Crested Flycatcher (Myiarchus crinitus) can be safely eliminated by voice and probability of occurrence (no verified winter records for LA). Ash-throated Flycatcher (Myiarchus cinerascens) can be eliminated by large size, and overall brightness of plumage.

 

18. Photographs or tape recordings obtained? (by whom? attached?): Unfortunately, no.

19. Previous experience with this species: Very familiar with this species from several years of birding in s. TX (M. t. cooperi) and multiple trips to se. AZ/ sw. NM (M. t. magister). Plus, one wintering individual at Diamond (Plaquemines Parish) observed on 19 Feb 2009.

 

20. Identification aids: (list books, illustrations, other birders, etc. used in identification):

 

a. at time of observation: none

 

b. after observation: National Geographic Complete Birds of N.A. (Alderfer et al. 2005).

21. This description is written from: __Yes___ notes made during the observation (_____notes attached?);__Yes___notes made after the observation (date:_____); __Yes___memory.

22. Are you positive of your identification if not, explain: Yes, very positive.

23. Signature of reporter: Devin Bosler Date: 8 March 2011 Time: 10:30 PM CST

24. May the LBRC have permission to display this report or
portions of this report on its website? Yes

If yes, may we include your name with the report? Yes