warbling vireo (Vireo gilvus)
CONFIRMATION STATUS: Confirmed.
IDENTIFICATION:
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Length: 4.75 inches
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Thick bill with hooked upper mandible
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Sexes similar
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Brown eye
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White supercilium
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Pale lores
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Gray or olive-gray head, back, wings, and tail
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White underparts
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No wing bars
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May have pale yellow wash on belly or flanks
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Blue-gray legs
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Juvenile may have yellowish flanks or belly in fall and a faint buff wing bar
Similar species:
The red-eyed vireo complex (red-eyed, black-whiskered, yellow- green)
has an olive-green back color and a contrasting gray crown, a bold white supercilium offset by black stripes above and below, and red eyes as adults. Philadelphia vireo has dark lores and pale yellow throat and breast. All
other vireos have wing bars. Tennessee warbler has similar, though more
olive, plumage, but is smaller and has a thin, pointed bill.
LIFE HISTORY
Migration Status: Neotropical migrant
Breeding Habitat: Woodland
Nest Location: Mid-story/canopy nesting
Nest Type: Open-cup
Clutch Size: 3-5
Length of Incubation: 12 days
Days to Fledge: 16
Number of Broods: ?
Diet: Almost exclusively insects; lesser quantities of fruit
SKY MEADOWS DISTRIBUTION/SEASONAL OCCURRENCE
Relative abundance and seasonal occurrence are indicated in red below.
Relative abundance
C - Common: Likely to be present in good numbers in appropriate habitat and season.
U - Uncommon: May be present in appropriate habitat and season, often in low
numbers.
O - Occassional: Found in appropriate habitat perhaps only a few times per season,
sometimes low numbers.
R - Rare: May not be recorded every year.
Acc - Accidental: Recorded once or twice, may not be expected again for a long time.
Seasonal Occurrence
Sp - Spring: March, April, May O
Su - Summer: June, July, August O
Fall: September, October, November
Winter: December, January, February
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