Properties (59)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
bird
|
| gptkbp:behavior |
diving for food
hovering over water |
| gptkbp:breedingSeason |
aerial displays
April to August Europe_and_Asia |
| gptkbp:callsFor |
a series of sharp notes
|
| gptkbp:colors |
seasonal variation
|
| gptkbp:communityEvents |
often seen in flocks
|
| gptkbp:debutYear |
1789
|
| gptkbp:diet |
insects
small fish |
| gptkbp:distribution |
gptkb:Eurasia
|
| gptkbp:eggColor |
speckled_brown
|
| gptkbp:family |
Laridae
|
| gptkbp:fauna |
Chlidonias hybrida
Black tern White-winged tern |
| gptkbp:fledgingPeriod |
3-4 weeks
|
| gptkbp:foodPairing |
regurgitated food
|
| gptkbp:foragingBehavior |
surface feeding
plunge diving skimming over water |
| gptkbp:genus |
Chlidonias
|
| gptkbp:habitat |
shallow waters
marshes freshwater lakes coastal lagoons |
| https://www.w3.org/2000/01/rdf-schema#label |
whiskered tern
|
| gptkbp:iceClass |
Africa_and_South_Asia
|
| gptkbp:incubationPeriod |
21-24 days
shared by both parents |
| gptkbp:introduced |
by_Johann_Friedrich_Gmelin
|
| gptkbp:length |
28–32 cm
|
| gptkbp:migration |
migratory
long-distance migrant |
| gptkbp:nesting |
islands
ground-nesting vegetated areas scrape nests |
| gptkbp:populationTrend |
stable
|
| gptkbp:predators |
birds of prey
mammals |
| gptkbp:reproduction |
lays 2-5 eggs
|
| gptkbp:socialStructure |
colonial breeder
|
| gptkbp:sustainability_initiatives |
Least Concern
|
| gptkbp:threats |
pollution
habitat loss human disturbance |
| gptkbp:vocalization |
chirps and whistles
|
| gptkbp:weight |
80–150 g
|
| gptkbp:wildlife |
Least Concern
wetlands |
| gptkbp:wingspan |
white underparts
65–75 cm dark cap blackish bill grey_wings |
| gptkbp:youth_development |
precocial
|