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gptkbp:instance_of
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gptkb:bird
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gptkbp:adult_plumage
|
brown and white mottled
white in winter
distinctive black cap
dark gray in summer
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gptkbp:behavior
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dive for food
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gptkbp:breeding_behavior
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often in large groups
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gptkbp:breeding_range
|
North America, Europe, Asia
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gptkbp:breeding_season
|
spring to summer
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gptkbp:call
|
trumpet-like
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gptkbp:color
|
black and white
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gptkbp:conservation_efforts
|
habitat restoration
|
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gptkbp:conservation_status
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gptkb:Least_Concern
|
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gptkbp:cultural_significance
|
symbol of wetland ecosystems
|
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gptkbp:diet
|
insects
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gptkbp:egg_color
|
speckled
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gptkbp:family
|
gptkb:Laridae
|
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gptkbp:fledging_period
|
3 to 4 weeks
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gptkbp:flight_style
|
light and buoyant
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gptkbp:foraging_behavior
|
surface feeding
aerial forager
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gptkbp:genus
|
gptkb:Chlidonias
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gptkbp:habitat
|
wetlands
marshes
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|
https://www.w3.org/2000/01/rdf-schema#label
|
black tern
|
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gptkbp:incubation_period
|
21 to 23 days
|
|
gptkbp:length
|
24 to 28 cm
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gptkbp:migration
|
along coastlines
migratory bird
long-distance migrant
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gptkbp:nest_material
|
reeds and grasses
|
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gptkbp:nesting
|
ground-nesting
affected by water levels
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gptkbp:population_trend
|
stable in some areas
|
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gptkbp:predators
|
birds of prey
|
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gptkbp:range
|
North America to Europe
|
|
gptkbp:research
|
important for wetland health
|
|
gptkbp:research_importance
|
indicator species for wetlands
|
|
gptkbp:social_behavior
|
gregarious
|
|
gptkbp:social_structure
|
loose colonies
|
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gptkbp:species
|
gptkb:Chlidonias_niger
|
|
gptkbp:subspecies
|
gptkb:Chlidonias_niger_surinamensis
gptkb:Chlidonias_niger_niger
|
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gptkbp:tail_type
|
forked tail
|
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gptkbp:territorial_behavior
|
during breeding season
|
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gptkbp:threats
|
climate change
pollution
habitat loss
|
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gptkbp:vocalization
|
used for communication
|
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gptkbp:weight
|
80 to 150 g
|
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gptkbp:wing_configuration
|
long and pointed
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gptkbp:wingspan
|
60 to 65 cm
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gptkbp:wintering_range
|
coastal areas
Africa, South America
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gptkbp:bfsParent
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gptkb:Bandon_Marsh_National_Wildlife_Refuge
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gptkbp:bfsLayer
|
7
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