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gptkbp:instance_of
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gptkb:bird
|
|
gptkbp:bfsLayer
|
5
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gptkbp:bfsParent
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gptkb:Poole_Harbour_Site_of_Special_Scientific_Interest
|
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gptkbp:behavior
|
colonial
aggressive towards intruders
|
|
gptkbp:breeding_season
|
spring to summer
large colonies
|
|
gptkbp:calls_for
|
trumpet-like
|
|
gptkbp:color
|
gptkb:red
white and gray
darker head
white head
red with a black tip
|
|
gptkbp:conservation_status
|
gptkb:Least_Concern
|
|
gptkbp:cultural_significance
|
symbol of coastal ecosystems
|
|
gptkbp:diet
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gptkb:fish
|
|
gptkbp:distribution
|
worldwide
|
|
gptkbp:egg_color
|
speckled
|
|
gptkbp:family
|
gptkb:Laridae
|
|
gptkbp:fishing_regulations
|
hovering
|
|
gptkbp:fledging_period
|
3-4 weeks
|
|
gptkbp:foraging_behavior
|
gptkb:Basketball_Player
estuaries
|
|
gptkbp:genus
|
gptkb:Sterna
|
|
gptkbp:habitat
|
coastal areas
open areas near water
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Common tern
|
|
gptkbp:incubation_period
|
21-28 days
|
|
gptkbp:interacts_with
|
affected by pollution
|
|
gptkbp:length
|
28–38 cm
|
|
gptkbp:lifespan
|
up to 30 years
|
|
gptkbp:mating_system
|
aerial displays
|
|
gptkbp:migration
|
migratory
coastal routes
up to 10,000 km
|
|
gptkbp:nesting
|
variable
ground-nesting
high density
sand or gravel
|
|
gptkbp:predators
|
gulls
|
|
gptkbp:related_species
|
gptkb:Forster's_tern
gptkb:Arctic_tern
gptkb:Black_tern
Roseate tern
|
|
gptkbp:social_structure
|
hierarchical
|
|
gptkbp:species
|
gptkb:Sterna_hirundo
|
|
gptkbp:subspecies
|
gptkb:Sterna_hirundo_hirundo
gptkb:Sterna_hirundo_longipennis
gptkb:Sterna_hirundo_tibialis
gptkb:Sterna_hirundo_sandvicensis
|
|
gptkbp:threats
|
habitat loss
|
|
gptkbp:traded_on
|
surface feeding
|
|
gptkbp:vocalization
|
varied calls
|
|
gptkbp:weight
|
80–150 g
|
|
gptkbp:wingspan
|
70–80 cm
|
|
gptkbp:wintering_range
|
coastal waters
|