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gptkbp:instance_of
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gptkb:species
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gptkbp:adult_plumage
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gray and white
brown and mottled
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gptkbp:breeding_range
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coastal North America
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gptkbp:breeding_season
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spring to summer
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gptkbp:climate_impact
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sensitive to climate change
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gptkbp:clutch_size
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1 to 4 eggs
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gptkbp:color
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gptkb:black
red with a black tip
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gptkbp:coloration
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white and gray
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gptkbp:common_name
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gptkb:Caspian_tern
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gptkbp:conservation_efforts
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habitat protection
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gptkbp:conservation_status
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gptkb:Least_Concern
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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:egg_color
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pale blue to greenish
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gptkbp:egg_size
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about 30 g
about 5 cm long
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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:flight_style
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strong and direct
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gptkbp:foraging_behavior
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gptkb:diving
hovering
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gptkbp:geographic_distribution
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gptkb:North_America
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gptkbp:habitat
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coastal areas
sandbars and islands
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|
https://www.w3.org/2000/01/rdf-schema#label
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Hydroprogne caspia
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gptkbp:human_interaction
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often seen in groups
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gptkbp:incubation_period
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about 28 days
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gptkbp:is_observed_in
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popular among birdwatchers
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gptkbp:length
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40 to 50 cm
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gptkbp:mating_system
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aerial displays
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gptkbp:migration
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migratory
autumn and spring
long-distance migratory
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gptkbp:nesting
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varies by location
May to July
scrapes in sand
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gptkbp:nesting_site
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gptkb:ground
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gptkbp:order
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gptkb:Charadriiformes
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gptkbp:population_trend
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gptkb:stable
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gptkbp:predators
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foxes
birds of prey
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gptkbp:related_species
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gptkb:Sterna_hirundo
gptkb:Sterna_paradisaea
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gptkbp:research_status
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studied species
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gptkbp:social_behavior
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colonial
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gptkbp:social_structure
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breeding colonies
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gptkbp:subspecies
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gptkb:Hydroprogne_caspia_caspia
gptkb:Hydroprogne_caspia_monteriensis
gptkb:Hydroprogne_caspia_tibetana
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gptkbp:territorial_behavior
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defends nesting area
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gptkbp:threats
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pollution
habitat loss
human disturbance
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gptkbp:type_of_care
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both parents care
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gptkbp:vocalization
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harsh calls
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gptkbp:weight
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0.8 to 1.5 kg
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gptkbp:wingspan
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100 to 120 cm
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gptkbp:wintering_range
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coastal South America
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gptkbp:bfsParent
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gptkb:Caspian_Tern
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gptkbp:bfsLayer
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6
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