1. English and Scientific names: Cassinís Sparrow (Aimophila cassinii)


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

3. Locality: LOUISIANA: (parish) Bossier

Specific Locality: Caneís Landing off W. Colquitt Dr./Bass Pro Dr., Bossier City


4. Date(s) when observed: 14 May 2011

5. Time(s) of day when observed: 11:00 AM thru 1:00 PM CDT

6. Reporting observer and address:

Justin Bosler

1300 Laban Ave., Apt. 165

Houma, LA 70363

7. Other observers accompanying reporter who also identified the bird(s): Devin Bosler, Terry Davis

8. Other observers who independently identified the bird(s): Jeff Trahan, Rosemary Seidler, Dave Patton, Paul Conover, Nancy Newfield, John Sevenair, m.ob.

9. Light conditions (position of bird in relation to shade and to direction and amount of light): Bright overcast sky providing plenty of light. No glare or backlighting.

10. Optical equipment (type, power, condition): Nikon EDG 8x42 binocular (good condition)

11. Distance to bird(s): within 10-15 meters at closest observation.

12. Duration of observation: solid 30 minutes of watching, listening and photographing.

13. Habitat: Riparian corridor on Red River, mature cottonwood-sycamore-boxelder-mulberry batture woods with dogwood-elderberry understory, regenerating willow thickets scattered throughout open goldenrod-ragweed-thistle cutover and sandpit with riprap/debris, and adjacent open short-grass field.

14. Behavior of bird / circumstances of observation (flying, feeding, resting; include and stress habits used in identification; relate events surrounding observation): Both males perched up and singing rather vigorously, though original male singing plus skylarking on territory at ragweed patch at base of hillside/ sandpit. Second male counter-singing at ~100 m to E.

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):

An overall drab gray-brown sparrow with grayish mantle, dark-centered rufous scapulars with gray edging, buffy-gray wash throughout underparts with faint dark streaking limited to flanks, and relatively long tail. Dull yellow lores and rufous-brown postocular patch on otherwise nondescript face. Supercilium gray. Crown finely stipled. Pale throat framed by thin, dark submoustachial stripes. Dull yellow alula feathers. Fairly large, silvery bill. Legs fleshy pink.

16. Voice: Unmistakable song with loud, sweet trill followed by two descending whistles. Song also given in skylarking flight.

17. Similar species (include how they were eliminated by your observation): Both Bachmanís and Botteriís Sparrows were easily eliminated by voice.

18. Photographs or tape recordings obtained? (by whom? attached?): Yes, photos by Justin Bosler and attached.

19. Previous experience with this species: Fair amount of experience throughout its typical range in Texas.

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

a. at time of observation: None

b. after observation: None

21. This description is written from: _____ notes made during the observation (_____notes attached?);__X___notes made after the observation (date: 15 May 2011); __X___memory.

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

23. Signature of reporter:Justin Bosler††† Date:8 July 2011††† Time: 10:00 PM CDT

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

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


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