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gptkbp:instance_of
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gptkb:bird
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gptkbp:adult_plumage
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brown and white mottled
white in winter
distinctive black cap
dark gray in summer
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gptkbp:aircraft_operated
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long and pointed
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gptkbp:behavior
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gregarious
dive for food
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gptkbp:breeding_season
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spring to summer
often in large groups
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gptkbp:calls_for
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trumpet-like
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gptkbp:color
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black and white
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gptkbp:conservation_efforts
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habitat restoration
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gptkbp:conservation_status
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gptkb:Least_Concern
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gptkbp:cultural_significance
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symbol of wetland ecosystems
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gptkbp:diet
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insects
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gptkbp:egg_color
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speckled
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gptkbp:family
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gptkb:Laridae
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gptkbp:first_flight
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light and buoyant
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gptkbp:fledging_period
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3 to 4 weeks
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gptkbp:foraging_behavior
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surface feeding
aerial forager
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gptkbp:genus
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gptkb:Chlidonias
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gptkbp:habitat
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wetlands
North America, Europe, Asia
marshes
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|
https://www.w3.org/2000/01/rdf-schema#label
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black tern
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gptkbp:incubation_period
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21 to 23 days
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gptkbp:length
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24 to 28 cm
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gptkbp:migration
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along coastlines
migratory bird
long-distance migrant
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gptkbp:nesting
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ground-nesting
reeds and grasses
affected by water levels
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gptkbp:population_trend
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stable in some areas
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gptkbp:predators
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birds of prey
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gptkbp:range
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North America to Europe
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gptkbp:research
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important for wetland health
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gptkbp:research_focus
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indicator species for wetlands
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gptkbp:social_structure
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loose colonies
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gptkbp:species
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gptkb:Chlidonias_niger
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gptkbp:subspecies
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gptkb:Chlidonias_niger_surinamensis
gptkb:Chlidonias_niger_niger
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gptkbp:tail_type
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forked tail
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gptkbp:territorial_behavior
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during breeding season
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gptkbp:threats
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climate change
pollution
habitat loss
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gptkbp:vocalization
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used for communication
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gptkbp:weight
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80 to 150 g
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gptkbp:wingspan
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60 to 65 cm
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gptkbp:wintering_range
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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
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6
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