Properties (63)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
species
|
| gptkbp:adultPlumage |
gray and white plumage
brown and white mottled plumage |
| gptkbp:aircraft |
white with black tips
|
| gptkbp:airlines |
graceful and agile
|
| gptkbp:behavior |
social birds
|
| gptkbp:breedingSeason |
temperate regions
spring to summer courtship displays |
| gptkbp:callsFor |
trumpet-like calls
|
| gptkbp:clutchSize |
1 to 3 eggs
|
| gptkbp:colors |
dark brown
white underparts black cap on head gray_wings |
| gptkbp:commonName |
Common Tern
|
| gptkbp:conservationEfforts |
Least Concern
protected areas monitoring populations |
| gptkbp:culturalSignificance |
symbol of coastal ecosystems
|
| gptkbp:diet |
fish
both parents feed chicks |
| gptkbp:distribution |
North_America,_Europe,_Asia
|
| gptkbp:eggColor |
pale blue or greenish
about 30 g about 4.5 cm long |
| gptkbp:family |
Laridae
|
| gptkbp:fishSpecies |
shallow coastal waters
hovering before diving |
| gptkbp:fledgingPeriod |
3 to 4 weeks
|
| gptkbp:foragingBehavior |
dive for fish
|
| gptkbp:genus |
Sterna
|
| gptkbp:habitat |
coastal areas
|
| gptkbp:headlights |
white with black edges
|
| https://www.w3.org/2000/01/rdf-schema#label |
Sterna hirundo
|
| gptkbp:iceClass |
coastal_areas_of_Africa_and_South_America
|
| gptkbp:length |
28 to 38 cm
|
| gptkbp:lensType |
red with a black tip
|
| gptkbp:lifespan |
up to 30 years
|
| gptkbp:migration |
migratory species
long-distance migratory bird migrates in fall and spring |
| gptkbp:nesting |
ground-nesting
April to August scrape on the ground often nests in large colonies |
| gptkbp:order |
Charadriiformes
|
| gptkbp:predators |
gulls, raptors
|
| gptkbp:relatedPatent |
gptkb:Sterna_paradisaea
Sterna dougallii Sterna sandvicensis |
| gptkbp:socialResponsibility |
often seen in flocks
|
| gptkbp:socialStructure |
colonial nesting
|
| gptkbp:subspecies |
gptkb:Sterna_hirundo_hirundo
gptkb:Sterna_hirundo_longipennis gptkb:Sterna_hirundo_tibialis |
| gptkbp:territory |
defend nesting territory
|
| gptkbp:threats |
pollution
habitat loss human disturbance |
| gptkbp:vocalization |
distinctive calls during breeding season
|
| gptkbp:weight |
80 to 150 g
|
| gptkbp:wingspan |
70 to 80 cm
|