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gptkbp:instance_of
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gptkb:genus
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gptkbp:bfsLayer
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4
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gptkbp:bfsParent
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gptkb:Family_Laridae
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gptkbp:behavior
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social birds
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gptkbp:characteristics
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webbed feet
long wings
pointed beaks
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gptkbp:conservation_status
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varies by species
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gptkbp:contains
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genera such as Gelochelidon
genera such as Sterna
genera such as Thalasseus
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gptkbp:cultural_significance
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symbol of coastal ecosystems
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gptkbp:diet
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gptkb:fish
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gptkbp:distribution
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worldwide
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gptkbp:first_flight
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strong fliers
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gptkbp:habitat
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coastal areas
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https://www.w3.org/2000/01/rdf-schema#label
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Sterninae
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gptkbp:migration
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some species are migratory
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gptkbp:nesting
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ground-nesting
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gptkbp:part_of
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family Sternidae
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gptkbp:predators
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fish and invertebrates
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gptkbp:related_to
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seabirds
shorebirds
waders
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gptkbp:reproduction
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lay eggs
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gptkbp:research
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studied for migration patterns
studied for breeding behavior
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gptkbp:species
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gptkb:Sooty_Tern
gptkb:Black_Tern
gptkb:Royal_Tern
gptkb:Bridled_Tern
gptkb:Caspian_Tern
gptkb:Common_Tern
gptkb:Least_Tern
gptkb:White-cheeked_Tern
gptkb:Elegant_Tern
gptkb:Sandwich_Tern
gptkb:Black-naped_Tern
gptkb:Gray_Tern
gptkb:Inca_Tern
gptkb:Noddy_Tern
gptkb:Forster's_Tern
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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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varied calls
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