LOUISIANA BIRD RECORDS COMMITTEE
REPORT FORM
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1. English and Scientific names: Black-whiskered Vireo (Vireo
altiloquus) |
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2. Number of individuals, sexes, ages, general plumage
(e.g., 2 in alternate plumage): One in
Definitive plumage |
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3. Locality: LOUISIANA: (parish) Cameron |
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Specific Locality: Willow
Island off LeBleu Camp Rd. (PR-3183), ca. 5.0 mi. E of Cameron |
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4. Date(s) when observed: 13 April 2011 |
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5. Time(s) of day when observed: ~11:45 AM – 12:00 PM CDT |
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6. Reporting observer and address: Justin Bosler 1300 Laban Ave. Apt. 165 Houma, LA 70363 |
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7. Other observers accompanying reporter who also identified
the bird(s): Devin Bosler |
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8. Other observers who independently identified the
bird(s): None |
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9. Light conditions (position of bird in relation to shade
and to direction and amount of light): Generally
clear skies with optimal midday sunlight.
Sun angle high and not a factor. |
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10. Optical equipment (type, power, condition): Zeiss Victory FL 8x42 (good condition)
and Nikon EDG 8x42 (good
condition) binoculars |
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11. Distance to bird(s): as close as 8-10 meters. |
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12. Duration of observation: approximately 10 minutes. |
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13. Habitat: Heavily
disturbed and fragmented coastal chenier (live oak-hackberry-honey locust)
woodlot with patches of brushy understory amid rural residential yard and
unimproved pasture with hackberry-tallow scrub. |
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14. Behavior of bird / circumstances of observation
(flying, feeding, resting; include and stress habits used in identification;
relate events surrounding observation): Foraging
silently in canopy of mature live oaks. Loosely associated with small
mixed-species flock. |
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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): Clearly a “Red-eyed”-type vireo with bold facial markings including blackish eyeline, bold whitish supercilium, dull gray crown, and with a distinct, dark malar stripe as the clinching field mark. Also obvious was relatively large bill. Underparts appeared largely whitish with faint yellow wash to vent/ undertail coverts while upperparts appeared dull olive. Irides were dark brown. |
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16. Voice: no
vocalizations given. |
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17. Similar species (include how they were eliminated by
your observation): Red-eyed Vireo was
eliminated by distinct, blackish malar stripe, hefty bill, lack of obvious
red in iris, and dull olive upperparts. |
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18. Photographs or tape recordings obtained? (by whom?
attached?): None |
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19. Previous experience with this species: At least 4 prior individuals seen in LA
plus limited experience with the species in FL Keys. |
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20. Identification aids: (list books, illustrations, other
birders, etc. used in identification): |
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a. at time of observation: None |
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b. after observation: None |
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21. This description is written from: _____ notes made
during the observation (_____notes attached?);__X___notes made after the observation (date:_____); __X___memory. |
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22. Are you positive of your identification if not,
explain: Yes, 100% positive. |
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23. Date: 8 August
2011 Time: 10:00 PM CDT |
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