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gptkbp:instance_of
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gptkb:bird
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gptkbp:bfsLayer
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5
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gptkbp:bfsParent
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gptkb:Common_Tern
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gptkbp:adult_plumage
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white and gray
brown and mottled
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gptkbp:aircraft_operated
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long and pointed
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gptkbp:behavior
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colonial
aggressive during breeding season
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gptkbp:breeding_season
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spring to summer
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gptkbp:calls_for
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a loud 'kree' sound
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gptkbp:color
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gptkb:black
white with black cap
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gptkbp:common_name
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gptkb:Sandwich_Tern
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gptkbp:conservation_efforts
|
monitoring populations
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gptkbp:conservation_status
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gptkb:Least_Concern
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gptkbp:cultural_significance
|
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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Europe and Africa
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gptkbp:egg_color
|
pale blue or green
about 4 cm long
about 20 g
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gptkbp:eye_color
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dark
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gptkbp:family
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gptkb:Laridae
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gptkbp:fledging_period
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about 4 weeks
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gptkbp:foraging_behavior
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gptkb:Basketball_Player
surface diving
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gptkbp:genus
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gptkb:Sterna
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gptkbp:habitat
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coastal areas
coastal Europe
up to several hundred pairs
sandy or rocky shores
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|
https://www.w3.org/2000/01/rdf-schema#label
|
Sterna hirundo sandvicensis
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gptkbp:incubation_period
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about 3 weeks
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gptkbp:length
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35-40 cm
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gptkbp:lifespan
|
up to 20 years
|
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gptkbp:mating_system
|
aerial displays
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gptkbp:migration
|
migratory
autumn and spring
coastal routes
up to 2000 km
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gptkbp:nesting
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ground-nesting
sandy beaches
grasses and seaweed
scrapes in sand
|
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gptkbp:population_trend
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gptkb:Professional_Wrestler
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gptkbp:predators
|
gulls and raptors
|
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gptkbp:research_focus
|
behavioral studies
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gptkbp:size
|
300 g average
|
|
gptkbp:social_structure
|
loose colonies
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gptkbp:species
|
hirundo
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gptkbp:subspecies
|
none known
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gptkbp:tail_type
|
forked
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gptkbp:territorial_behavior
|
defends nesting area
|
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gptkbp:threats
|
habitat loss
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gptkbp:vocalization
|
distinctive calls
|
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gptkbp:weight
|
250-400 g
|
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gptkbp:wingspan
|
85-95 cm
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gptkbp:wintering_range
|
West Africa
|