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gptkbp:instance_of
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gptkb:bird
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gptkbp:bfsLayer
|
5
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gptkbp:bfsParent
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gptkb:White_Tern
gptkb:Sterninae
gptkb:Whiskered_Tern
gptkb:White-winged_Tern
|
|
gptkbp:adaptation
|
seasonal migration
|
|
gptkbp:adult_plumage
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black and white
brown and white mottled
dark gray above, white below
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gptkbp:behavior
|
gregarious
protective of young
|
|
gptkbp:breeding_season
|
monogamous
spring to summer
|
|
gptkbp:calls_for
|
trumpet-like
|
|
gptkbp:clutch_size
|
average 3 eggs
|
|
gptkbp:color
|
seasonally variable
|
|
gptkbp:conservation_efforts
|
habitat restoration
|
|
gptkbp:conservation_status
|
gptkb:Least_Concern
|
|
gptkbp:diet
|
insects
|
|
gptkbp:distribution
|
North America, Europe, Asia
|
|
gptkbp:egg_color
|
2-5 eggs
white or pale blue
|
|
gptkbp:family
|
gptkb:Laridae
|
|
gptkbp:fledging_period
|
3-4 weeks
|
|
gptkbp:foraging_behavior
|
surface feeding
aerial pursuit
|
|
gptkbp:genus
|
gptkb:Chlidonias
|
|
gptkbp:habitat
|
temperate regions
wetlands
shallow waters
marshes, lakes, rivers
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Black Tern
|
|
gptkbp:incubation_period
|
20-22 days
|
|
gptkbp:length
|
24–28 cm
|
|
gptkbp:mating_system
|
aerial acrobatics
|
|
gptkbp:migration
|
varies by region
seasonal
migratory
up to 3,000 km
|
|
gptkbp:nesting
|
variable
May to July
ground-nester
defended by males
floating vegetation
high in suitable areas
|
|
gptkbp:population_trend
|
gptkb:Professional_Wrestler
|
|
gptkbp:predators
|
birds of prey
|
|
gptkbp:social_structure
|
loose colonies
|
|
gptkbp:species
|
gptkb:Chlidonias_niger
|
|
gptkbp:status
|
studied species
|
|
gptkbp:subspecies
|
gptkb:Chlidonias_niger_surinamensis
gptkb:Chlidonias_niger_niger
|
|
gptkbp:succeeded_by
|
high in undisturbed areas
|
|
gptkbp:threats
|
habitat loss
|
|
gptkbp:vocalization
|
varied calls
|
|
gptkbp:weight
|
70–150 g
|
|
gptkbp:wildlife
|
gptkb:metropolitan_area
popular among birders
|
|
gptkbp:wingspan
|
60–65 cm
|
|
gptkbp:wintering_range
|
tropical regions
Africa, South America
|