Statements (51)
Predicate | Object |
---|---|
gptkbp:instanceOf |
bird
|
gptkbp:age |
fledglings
|
gptkbp:aircraft |
white with black tips
|
gptkbp:airlines |
graceful
|
gptkbp:behavior |
social
dependent on parents fishing in groups |
gptkbp:bodyStyle |
long and slender
|
gptkbp:breedingSeason |
varies by region
aerial acrobatics |
gptkbp:callsFor |
trumpet-like
|
gptkbp:colors |
white
yellow black distinctive black cap |
gptkbp:diet |
fish
|
gptkbp:distribution |
sub-Saharan Africa
|
gptkbp:eggColor |
2-3 eggs
|
gptkbp:family |
Laridae
|
gptkbp:fauna |
gptkb:Sterna_aurantia
Common Tern Sandwich Tern |
gptkbp:fledgingPeriod |
about 4 weeks
|
gptkbp:foragingBehavior |
dive
|
gptkbp:genus |
Sterna
|
gptkbp:habitat |
riverbanks
|
gptkbp:headlights |
white
forked |
https://www.w3.org/2000/01/rdf-schema#label |
African River Tern
|
gptkbp:incubationPeriod |
about 21 days
|
gptkbp:length |
30-35 cm
|
gptkbp:lensType |
slender and pointed
|
gptkbp:migration |
seasonal
some populations are migratory |
gptkbp:nesting |
on the ground
scrapes in sand |
gptkbp:populationTrend |
stable
|
gptkbp:predators |
birds of prey
|
gptkbp:socialStructure |
colonial
|
gptkbp:sustainability_initiatives |
Least Concern
|
gptkbp:threats |
pollution
habitat loss human disturbance |
gptkbp:visitedBy |
wetlands
lakes rivers |
gptkbp:vocalization |
varied calls
|
gptkbp:weight |
100-150 g
|
gptkbp:wildlife |
protected areas
sandbars |
gptkbp:wingspan |
75-85 cm
|