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gptkbp:instance_of
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gptkb:bird
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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:adaptation
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adapted to marine life
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gptkbp:behavior
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colonial
often seen in flocks
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gptkbp:breeding_season
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May to September
often large colonies
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gptkbp:calls_for
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trumpet-like
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gptkbp:clutch_size
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1 to 3 eggs
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gptkbp:color
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white and gray
long and slender
distinctive black cap
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gptkbp:conservation_status
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gptkb:Least_Concern
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gptkbp:cultural_significance
|
not widely known
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gptkbp:diet
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gptkb:fish
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gptkbp:distribution
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tropical and subtropical oceans
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gptkbp:egg_color
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white with brown spots
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gptkbp:environmental_impact
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affected by climate change
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gptkbp:family
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gptkb:Laridae
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gptkbp:first_described_by
|
by Gmelin in 1789
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gptkbp:first_flight
|
graceful gliding
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gptkbp:fledging_period
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about 35 days
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gptkbp:foot
|
short and webbed
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gptkbp:foraging_behavior
|
gptkb:Basketball_Player
surface diving
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gptkbp:genus
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gptkb:Onychoprion
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gptkbp:habitat
|
islands
coastal regions
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|
https://www.w3.org/2000/01/rdf-schema#label
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Bridled Tern
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gptkbp:incubation_period
|
about 30 days
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gptkbp:length
|
30 to 36 cm
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gptkbp:lifespan
|
up to 20 years
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gptkbp:mating_system
|
monogamous
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gptkbp:migration
|
migratory
seasonal migration
up to 5000 km
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gptkbp:nesting
|
variable
ground-nesting
grasses and seaweed
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gptkbp:population_trend
|
gptkb:Professional_Wrestler
|
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gptkbp:predators
|
seagulls
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gptkbp:related_species
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gptkb:Sooty_Tern
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gptkbp:research_interest
|
studied for migration patterns
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|
gptkbp:social_structure
|
hierarchical
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gptkbp:species
|
gptkb:Onychoprion_anaethetus
|
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gptkbp:subspecies
|
none known
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gptkbp:tail_type
|
forked tail
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gptkbp:territorial_behavior
|
defends nesting area
|
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gptkbp:threats
|
habitat loss
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gptkbp:type_of_care
|
both parents care
|
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gptkbp:vision
|
excellent eyesight
|
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gptkbp:vocalization
|
varied calls
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gptkbp:weight
|
150 to 300 g
|
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gptkbp:wingspan
|
70 to 80 cm
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gptkbp:wintering_range
|
southern oceans
|