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gptkbp:instanceOf
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gptkb:bird
gptkb:species
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gptkbp:averageWingspan
|
39-42 cm
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gptkbp:behavior
|
colonial nester
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gptkbp:breedingRange
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gptkb:Canada
gptkb:United_States
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gptkbp:clutchSize
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3-6
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gptkbp:color
|
males glossy blue-black, females duller with lighter underparts
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gptkbp:commonName
|
gptkb:Hirondelle_noire
gptkb:Purpurschwalbe
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gptkbp:conservationStatus
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Least Concern
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gptkbp:diet
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gptkb:entomologist
flying insects
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gptkbp:family
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gptkb:Hirundinidae
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gptkbp:firstDescribed
|
gptkb:Carl_Linnaeus
1758
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gptkbp:fledgingPeriod
|
26-32 days
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gptkbp:flightNumber
|
agile, acrobatic
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gptkbp:genus
|
gptkb:Progne
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|
https://www.w3.org/2000/01/rdf-schema#label
|
purple martin
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gptkbp:incubationPeriod
|
15-18 days
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gptkbp:IUCNStatus
|
LC
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gptkbp:length
|
19-20 cm
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gptkbp:lifespan
|
up to 13 years
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gptkbp:migratory
|
true
up to 8,000 km
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gptkbp:monitors
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gptkb:Purple_Martin_Conservation_Association
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gptkbp:nativeTo
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gptkb:North_America
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gptkbp:nesting
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cavity nester
spring to early summer
twigs, leaves, mud
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gptkbp:notableFeature
|
largest swallow in North America
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gptkbp:order
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gptkb:Passeriformes
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gptkbp:plumage
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iridescent dark blue-purple
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gptkbp:predators
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hawks
owls
snakes
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gptkbp:roostsIn
|
large communal roosts
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gptkbp:scientificName
|
gptkb:Progne_subis
|
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gptkbp:sexualDimorphism
|
males are darker than females
|
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gptkbp:sexualMaturity
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1 year
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gptkbp:symbol
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hospitality (in some North American cultures)
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gptkbp:threats
|
competition with European starlings
competition with house sparrows
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gptkbp:usesManmadeHousing
|
true
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gptkbp:vocalization
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varied chirps and gurgles
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gptkbp:weight
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45-60 g
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gptkbp:winteringRange
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gptkb:South_America
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gptkbp:英文名
|
gptkb:Golondrina_purpúrea
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gptkbp:bfsParent
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gptkb:Hood_Canal
gptkb:saguaro_cactus
gptkb:Lake_Apopka
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gptkbp:bfsLayer
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6
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