|
gptkbp:instance_of
|
gptkb:bird
|
|
gptkbp:bfsLayer
|
5
|
|
gptkbp:bfsParent
|
gptkb:The_Tern
gptkb:Tern
gptkb:Dublin_Bay_Biosphere_Reserve
gptkb:Royal_Tern
gptkb:Least_Tern
gptkb:Sterninae
|
|
gptkbp:adult_plumage
|
brown and white
white and gray
white underparts
|
|
gptkbp:behavior
|
colonial
aggressive during nesting
|
|
gptkbp:breeding_season
|
spring to summer
large colonies
|
|
gptkbp:calls_for
|
trumpet-like
|
|
gptkbp:clutch_size
|
1 to 3 eggs
|
|
gptkbp:color
|
gptkb:black
black cap on head
|
|
gptkbp:conservation_status
|
gptkb:Least_Concern
|
|
gptkbp:diet
|
gptkb:fish
|
|
gptkbp:distribution
|
worldwide
|
|
gptkbp:education
|
both parents care
|
|
gptkbp:egg_color
|
speckled
about 4.5 cm long
|
|
gptkbp:family
|
gptkb:Laridae
|
|
gptkbp:fledging_period
|
about 4 weeks
|
|
gptkbp:foraging_behavior
|
gptkb:Basketball_Player
surface feeding
nearshore waters
|
|
gptkbp:genus
|
gptkb:Thalasseus
|
|
gptkbp:habitat
|
islands
coastal areas
sandy shores
estuaries
coastal lagoons
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Sandwich Tern
|
|
gptkbp:incubation_period
|
about 21 days
|
|
gptkbp:length
|
32–36 cm
|
|
gptkbp:lifespan
|
up to 20 years
|
|
gptkbp:mating_system
|
aerial displays
|
|
gptkbp:migration
|
migratory
coastal routes
up to 2000 km
|
|
gptkbp:nesting
|
variable
ground-nesting
high density
sand or gravel beaches
|
|
gptkbp:predators
|
gulls
|
|
gptkbp:related_species
|
gptkb:Royal_Tern
gptkb:Common_Tern
gptkb:Elegant_Tern
|
|
gptkbp:social_structure
|
hierarchical
|
|
gptkbp:species
|
gptkb:Thalasseus_sandvicensis
|
|
gptkbp:subspecies
|
gptkb:Thalasseus_sandvicensis_acuflavidus
gptkb:Thalasseus_sandvicensis_eurygnathus
gptkb:Thalasseus_sandvicensis_sandvicensis
|
|
gptkbp:threats
|
pollution
habitat loss
human disturbance
|
|
gptkbp:type_of_care
|
dependent on parents
|
|
gptkbp:vocalization
|
loud and harsh
|
|
gptkbp:weight
|
200–400 g
|
|
gptkbp:wingspan
|
80–90 cm
|